Home / 22,621.28-31,217.09-12,549.47

Finding the Fourth Proportional to 22,621.28, 31,217.09 and 12,549.47

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Solution

The fourth proportional to 22,621.28, 31,217.09 and 12,549.47 is: 17,318.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,621.28 : 31,217.09 = 12,549.47 : x
  2. Step 2: Convert to fraction form
    22,621.28/31,217.09 = 12,549.47/x
  3. Step 3: Cross multiply
    22,621.28x = 31,217.09 × 12,549.47
  4. Step 4: Simplify right side
    22,621.28x = 391,757,715.61
  5. Step 5: Solve for x
    x = 391,757,715.61/22,621.28
  6. Step 6: Final answer
    x = 17,318.11

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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.