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Finding the Fourth Proportional to 22,149.05, 30,565.76 and 12,717

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Solution

The fourth proportional to 22,149.05, 30,565.76 and 12,717 is: 17,549.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,149.05 : 30,565.76 = 12,717 : x
  2. Step 2: Convert to fraction form
    22,149.05/30,565.76 = 12,717/x
  3. Step 3: Cross multiply
    22,149.05x = 30,565.76 × 12,717
  4. Step 4: Simplify right side
    22,149.05x = 388,704,706.34
  5. Step 5: Solve for x
    x = 388,704,706.34/22,149.05
  6. Step 6: Final answer
    x = 17,549.50

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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.