Home / 40,520.85-60,781.29-10,938.66

Finding the Fourth Proportional to 40,520.85, 60,781.29 and 10,938.66

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Solution

The fourth proportional to 40,520.85, 60,781.29 and 10,938.66 is: 16,407.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,520.85 : 60,781.29 = 10,938.66 : x
  2. Step 2: Convert to fraction form
    40,520.85/60,781.29 = 10,938.66/x
  3. Step 3: Cross multiply
    40,520.85x = 60,781.29 × 10,938.66
  4. Step 4: Simplify right side
    40,520.85x = 664,865,865.67
  5. Step 5: Solve for x
    x = 664,865,865.67/40,520.85
  6. Step 6: Final answer
    x = 16,407.99

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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.