Home / 28,061.38-38,724.57-15,486.90

Finding the Fourth Proportional to 28,061.38, 38,724.57 and 15,486.90

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Solution

The fourth proportional to 28,061.38, 38,724.57 and 15,486.90 is: 21,371.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,061.38 : 38,724.57 = 15,486.90 : x
  2. Step 2: Convert to fraction form
    28,061.38/38,724.57 = 15,486.90/x
  3. Step 3: Cross multiply
    28,061.38x = 38,724.57 × 15,486.90
  4. Step 4: Simplify right side
    28,061.38x = 599,723,543.13
  5. Step 5: Solve for x
    x = 599,723,543.13/28,061.38
  6. Step 6: Final answer
    x = 21,371.85

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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.