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Finding the Fourth Proportional to 14,932.89, 20,606.90 and 8,217.90

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Solution

The fourth proportional to 14,932.89, 20,606.90 and 8,217.90 is: 11,340.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,932.89 : 20,606.90 = 8,217.90 : x
  2. Step 2: Convert to fraction form
    14,932.89/20,606.90 = 8,217.90/x
  3. Step 3: Cross multiply
    14,932.89x = 20,606.90 × 8,217.90
  4. Step 4: Simplify right side
    14,932.89x = 169,345,402.42
  5. Step 5: Solve for x
    x = 169,345,402.42/14,932.89
  6. Step 6: Final answer
    x = 11,340.43

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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.