Home / 15,972.66-22,035.87-9,920.07

Finding the Fourth Proportional to 15,972.66, 22,035.87 and 9,920.07

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Solution

The fourth proportional to 15,972.66, 22,035.87 and 9,920.07 is: 13,685.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,972.66 : 22,035.87 = 9,920.07 : x
  2. Step 2: Convert to fraction form
    15,972.66/22,035.87 = 9,920.07/x
  3. Step 3: Cross multiply
    15,972.66x = 22,035.87 × 9,920.07
  4. Step 4: Simplify right side
    15,972.66x = 218,597,372.91
  5. Step 5: Solve for x
    x = 218,597,372.91/15,972.66
  6. Step 6: Final answer
    x = 13,685.72

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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.