Home / 20,568.38-28,384.24-11,136.88

Finding the Fourth Proportional to 20,568.38, 28,384.24 and 11,136.88

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Solution

The fourth proportional to 20,568.38, 28,384.24 and 11,136.88 is: 15,368.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,568.38 : 28,384.24 = 11,136.88 : x
  2. Step 2: Convert to fraction form
    20,568.38/28,384.24 = 11,136.88/x
  3. Step 3: Cross multiply
    20,568.38x = 28,384.24 × 11,136.88
  4. Step 4: Simplify right side
    20,568.38x = 316,111,677.17
  5. Step 5: Solve for x
    x = 316,111,677.17/20,568.38
  6. Step 6: Final answer
    x = 15,368.82

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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.