Home / 42,382.11-63,572.09-20,211.15

Finding the Fourth Proportional to 42,382.11, 63,572.09 and 20,211.15

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Solution

The fourth proportional to 42,382.11, 63,572.09 and 20,211.15 is: 30,316.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,382.11 : 63,572.09 = 20,211.15 : x
  2. Step 2: Convert to fraction form
    42,382.11/63,572.09 = 20,211.15/x
  3. Step 3: Cross multiply
    42,382.11x = 63,572.09 × 20,211.15
  4. Step 4: Simplify right side
    42,382.11x = 1,284,864,945.75
  5. Step 5: Solve for x
    x = 1,284,864,945.75/42,382.11
  6. Step 6: Final answer
    x = 30,316.21

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.