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Finding the Fourth Proportional to 14,793.89, 20,415.20 and 8,079.71

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Solution

The fourth proportional to 14,793.89, 20,415.20 and 8,079.71 is: 11,149.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,793.89 : 20,415.20 = 8,079.71 : x
  2. Step 2: Convert to fraction form
    14,793.89/20,415.20 = 8,079.71/x
  3. Step 3: Cross multiply
    14,793.89x = 20,415.20 × 8,079.71
  4. Step 4: Simplify right side
    14,793.89x = 164,948,855.19
  5. Step 5: Solve for x
    x = 164,948,855.19/14,793.89
  6. Step 6: Final answer
    x = 11,149.80

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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.