Home / 12,555.23-17,320.75-7,773.91

Finding the Fourth Proportional to 12,555.23, 17,320.75 and 7,773.91

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Solution

The fourth proportional to 12,555.23, 17,320.75 and 7,773.91 is: 10,724.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,555.23 : 17,320.75 = 7,773.91 : x
  2. Step 2: Convert to fraction form
    12,555.23/17,320.75 = 7,773.91/x
  3. Step 3: Cross multiply
    12,555.23x = 17,320.75 × 7,773.91
  4. Step 4: Simplify right side
    12,555.23x = 134,649,951.63
  5. Step 5: Solve for x
    x = 134,649,951.63/12,555.23
  6. Step 6: Final answer
    x = 10,724.61

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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.