Home / 20,882.16-28,854.88-16,440.08

Finding the Fourth Proportional to 20,882.16, 28,854.88 and 16,440.08

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Solution

The fourth proportional to 20,882.16, 28,854.88 and 16,440.08 is: 22,716.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,882.16 : 28,854.88 = 16,440.08 : x
  2. Step 2: Convert to fraction form
    20,882.16/28,854.88 = 16,440.08/x
  3. Step 3: Cross multiply
    20,882.16x = 28,854.88 × 16,440.08
  4. Step 4: Simplify right side
    20,882.16x = 474,376,535.59
  5. Step 5: Solve for x
    x = 474,376,535.59/20,882.16
  6. Step 6: Final answer
    x = 22,716.83

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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.