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Finding the Fourth Proportional to 14,766.90, 20,380.14 and 8,479.14

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Solution

The fourth proportional to 14,766.90, 20,380.14 and 8,479.14 is: 11,702.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,766.90 : 20,380.14 = 8,479.14 : x
  2. Step 2: Convert to fraction form
    14,766.90/20,380.14 = 8,479.14/x
  3. Step 3: Cross multiply
    14,766.90x = 20,380.14 × 8,479.14
  4. Step 4: Simplify right side
    14,766.90x = 172,806,060.28
  5. Step 5: Solve for x
    x = 172,806,060.28/14,766.90
  6. Step 6: Final answer
    x = 11,702.26

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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.