Home / 39,641.38-54,700.08-21,731.66

Finding the Fourth Proportional to 39,641.38, 54,700.08 and 21,731.66

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Solution

The fourth proportional to 39,641.38, 54,700.08 and 21,731.66 is: 29,986.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,641.38 : 54,700.08 = 21,731.66 : x
  2. Step 2: Convert to fraction form
    39,641.38/54,700.08 = 21,731.66/x
  3. Step 3: Cross multiply
    39,641.38x = 54,700.08 × 21,731.66
  4. Step 4: Simplify right side
    39,641.38x = 1,188,723,540.53
  5. Step 5: Solve for x
    x = 1,188,723,540.53/39,641.38
  6. Step 6: Final answer
    x = 29,986.94

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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.