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Finding the Fourth Proportional to 14,591.71, 20,217.89 and 14,276.42

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Solution

The fourth proportional to 14,591.71, 20,217.89 and 14,276.42 is: 19,781.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,591.71 : 20,217.89 = 14,276.42 : x
  2. Step 2: Convert to fraction form
    14,591.71/20,217.89 = 14,276.42/x
  3. Step 3: Cross multiply
    14,591.71x = 20,217.89 × 14,276.42
  4. Step 4: Simplify right side
    14,591.71x = 288,638,916.68
  5. Step 5: Solve for x
    x = 288,638,916.68/14,591.71
  6. Step 6: Final answer
    x = 19,781.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.