Home / 22,311.48-30,794.40-12,878.76

Finding the Fourth Proportional to 22,311.48, 30,794.40 and 12,878.76

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Solution

The fourth proportional to 22,311.48, 30,794.40 and 12,878.76 is: 17,775.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,311.48 : 30,794.40 = 12,878.76 : x
  2. Step 2: Convert to fraction form
    22,311.48/30,794.40 = 12,878.76/x
  3. Step 3: Cross multiply
    22,311.48x = 30,794.40 × 12,878.76
  4. Step 4: Simplify right side
    22,311.48x = 396,593,686.94
  5. Step 5: Solve for x
    x = 396,593,686.94/22,311.48
  6. Step 6: Final answer
    x = 17,775.32

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Find fourth proportional to 11,155.74, 15,397.20 and 6,439.38
Half scale
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Double scale
Find fourth proportional to 22,312.48, 30,795.78 and 12,879.76
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.