Home / 18,355.76-25,331-9,972.28

Finding the Fourth Proportional to 18,355.76, 25,331 and 9,972.28

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Solution

The fourth proportional to 18,355.76, 25,331 and 9,972.28 is: 13,761.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,355.76 : 25,331 = 9,972.28 : x
  2. Step 2: Convert to fraction form
    18,355.76/25,331 = 9,972.28/x
  3. Step 3: Cross multiply
    18,355.76x = 25,331 × 9,972.28
  4. Step 4: Simplify right side
    18,355.76x = 252,607,824.68
  5. Step 5: Solve for x
    x = 252,607,824.68/18,355.76
  6. Step 6: Final answer
    x = 13,761.77

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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.