Home / 20,793,940.80-31,190,911.20-15,755,092.80

Finding the Fourth Proportional to 20,793,940.80, 31,190,911.20 and 15,755,092.80

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Solution

The fourth proportional to 20,793,940.80, 31,190,911.20 and 15,755,092.80 is: 23,632,639.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,793,940.80 : 31,190,911.20 = 15,755,092.80 : x
  2. Step 2: Convert to fraction form
    20,793,940.80/31,190,911.20 = 15,755,092.80/x
  3. Step 3: Cross multiply
    20,793,940.80x = 31,190,911.20 × 15,755,092.80
  4. Step 4: Simplify right side
    20,793,940.80x = 491,415,700,472,559.38
  5. Step 5: Solve for x
    x = 491,415,700,472,559.38/20,793,940.80
  6. Step 6: Final answer
    x = 23,632,639.20

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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.