Home / 39,422.18-54,402.63-21,516.86

Finding the Fourth Proportional to 39,422.18, 54,402.63 and 21,516.86

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Solution

The fourth proportional to 39,422.18, 54,402.63 and 21,516.86 is: 29,693.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,422.18 : 54,402.63 = 21,516.86 : x
  2. Step 2: Convert to fraction form
    39,422.18/54,402.63 = 21,516.86/x
  3. Step 3: Cross multiply
    39,422.18x = 54,402.63 × 21,516.86
  4. Step 4: Simplify right side
    39,422.18x = 1,170,573,773.34
  5. Step 5: Solve for x
    x = 1,170,573,773.34/39,422.18
  6. Step 6: Final answer
    x = 29,693.28

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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.