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Finding the Fourth Proportional to 14,602.87, 20,149.14 and 8,938.90

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Solution

The fourth proportional to 14,602.87, 20,149.14 and 8,938.90 is: 12,333.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,602.87 : 20,149.14 = 8,938.90 : x
  2. Step 2: Convert to fraction form
    14,602.87/20,149.14 = 8,938.90/x
  3. Step 3: Cross multiply
    14,602.87x = 20,149.14 × 8,938.90
  4. Step 4: Simplify right side
    14,602.87x = 180,111,147.55
  5. Step 5: Solve for x
    x = 180,111,147.55/14,602.87
  6. Step 6: Final answer
    x = 12,333.96

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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.