Home / 20,747.30-28,630.15-11,793.56

Finding the Fourth Proportional to 20,747.30, 28,630.15 and 11,793.56

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Solution

The fourth proportional to 20,747.30, 28,630.15 and 11,793.56 is: 16,274.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,747.30 : 28,630.15 = 11,793.56 : x
  2. Step 2: Convert to fraction form
    20,747.30/28,630.15 = 11,793.56/x
  3. Step 3: Cross multiply
    20,747.30x = 28,630.15 × 11,793.56
  4. Step 4: Simplify right side
    20,747.30x = 337,651,391.83
  5. Step 5: Solve for x
    x = 337,651,391.83/20,747.30
  6. Step 6: Final answer
    x = 16,274.47

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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.