Home / 12,555.24-17,320.76-7,773.90

Finding the Fourth Proportional to 12,555.24, 17,320.76 and 7,773.90

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Solution

The fourth proportional to 12,555.24, 17,320.76 and 7,773.90 is: 10,724.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,555.24 : 17,320.76 = 7,773.90 : x
  2. Step 2: Convert to fraction form
    12,555.24/17,320.76 = 7,773.90/x
  3. Step 3: Cross multiply
    12,555.24x = 17,320.76 × 7,773.90
  4. Step 4: Simplify right side
    12,555.24x = 134,649,856.16
  5. Step 5: Solve for x
    x = 134,649,856.16/12,555.24
  6. Step 6: Final answer
    x = 10,724.59

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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.