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Finding the Fourth Proportional to 14,793.78, 20,414.61 and 8,079.30

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Solution

The fourth proportional to 14,793.78, 20,414.61 and 8,079.30 is: 11,148.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,793.78 : 20,414.61 = 8,079.30 : x
  2. Step 2: Convert to fraction form
    14,793.78/20,414.61 = 8,079.30/x
  3. Step 3: Cross multiply
    14,793.78x = 20,414.61 × 8,079.30
  4. Step 4: Simplify right side
    14,793.78x = 164,935,758.57
  5. Step 5: Solve for x
    x = 164,935,758.57/14,793.78
  6. Step 6: Final answer
    x = 11,148.99

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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.