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Finding the Fourth Proportional to 14,841.60, 20,480.58 and 8,125.90

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Solution

The fourth proportional to 14,841.60, 20,480.58 and 8,125.90 is: 11,213.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,841.60 : 20,480.58 = 8,125.90 : x
  2. Step 2: Convert to fraction form
    14,841.60/20,480.58 = 8,125.90/x
  3. Step 3: Cross multiply
    14,841.60x = 20,480.58 × 8,125.90
  4. Step 4: Simplify right side
    14,841.60x = 166,423,145.02
  5. Step 5: Solve for x
    x = 166,423,145.02/14,841.60
  6. Step 6: Final answer
    x = 11,213.29

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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.