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Finding the Fourth Proportional to 38,520.90, 57,778.71 and 10,818.90

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Solution

The fourth proportional to 38,520.90, 57,778.71 and 10,818.90 is: 16,227.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,520.90 : 57,778.71 = 10,818.90 : x
  2. Step 2: Convert to fraction form
    38,520.90/57,778.71 = 10,818.90/x
  3. Step 3: Cross multiply
    38,520.90x = 57,778.71 × 10,818.90
  4. Step 4: Simplify right side
    38,520.90x = 625,102,085.62
  5. Step 5: Solve for x
    x = 625,102,085.62/38,520.90
  6. Step 6: Final answer
    x = 16,227.61

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1.5x scale

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.