Home / 22,136.40-30,517-13,747.28

Finding the Fourth Proportional to 22,136.40, 30,517 and 13,747.28

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Solution

The fourth proportional to 22,136.40, 30,517 and 13,747.28 is: 18,951.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,136.40 : 30,517 = 13,747.28 : x
  2. Step 2: Convert to fraction form
    22,136.40/30,517 = 13,747.28/x
  3. Step 3: Cross multiply
    22,136.40x = 30,517 × 13,747.28
  4. Step 4: Simplify right side
    22,136.40x = 419,525,743.76
  5. Step 5: Solve for x
    x = 419,525,743.76/22,136.40
  6. Step 6: Final answer
    x = 18,951.85

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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.