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Finding the Fourth Proportional to 15,945.69, 22,002.08 and 8,872.11

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Solution

The fourth proportional to 15,945.69, 22,002.08 and 8,872.11 is: 12,241.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,945.69 : 22,002.08 = 8,872.11 : x
  2. Step 2: Convert to fraction form
    15,945.69/22,002.08 = 8,872.11/x
  3. Step 3: Cross multiply
    15,945.69x = 22,002.08 × 8,872.11
  4. Step 4: Simplify right side
    15,945.69x = 195,204,829.63
  5. Step 5: Solve for x
    x = 195,204,829.63/15,945.69
  6. Step 6: Final answer
    x = 12,241.86

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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.