Home / 39,540.90-54,565.94-21,635.72

Finding the Fourth Proportional to 39,540.90, 54,565.94 and 21,635.72

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Solution

The fourth proportional to 39,540.90, 54,565.94 and 21,635.72 is: 29,857.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,540.90 : 54,565.94 = 21,635.72 : x
  2. Step 2: Convert to fraction form
    39,540.90/54,565.94 = 21,635.72/x
  3. Step 3: Cross multiply
    39,540.90x = 54,565.94 × 21,635.72
  4. Step 4: Simplify right side
    39,540.90x = 1,180,573,399.38
  5. Step 5: Solve for x
    x = 1,180,573,399.38/39,540.90
  6. Step 6: Final answer
    x = 29,857.02

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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.