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Finding the Fourth Proportional to 12,217.68, 16,849.98 and 9,391.90

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Solution

The fourth proportional to 12,217.68, 16,849.98 and 9,391.90 is: 12,952.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,217.68 : 16,849.98 = 9,391.90 : x
  2. Step 2: Convert to fraction form
    12,217.68/16,849.98 = 9,391.90/x
  3. Step 3: Cross multiply
    12,217.68x = 16,849.98 × 9,391.90
  4. Step 4: Simplify right side
    12,217.68x = 158,253,327.16
  5. Step 5: Solve for x
    x = 158,253,327.16/12,217.68
  6. Step 6: Final answer
    x = 12,952.81

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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.