Home / 20,423.24-28,200.66-12,882.14

Finding the Fourth Proportional to 20,423.24, 28,200.66 and 12,882.14

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Solution

The fourth proportional to 20,423.24, 28,200.66 and 12,882.14 is: 17,787.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,423.24 : 28,200.66 = 12,882.14 : x
  2. Step 2: Convert to fraction form
    20,423.24/28,200.66 = 12,882.14/x
  3. Step 3: Cross multiply
    20,423.24x = 28,200.66 × 12,882.14
  4. Step 4: Simplify right side
    20,423.24x = 363,284,850.21
  5. Step 5: Solve for x
    x = 363,284,850.21/20,423.24
  6. Step 6: Final answer
    x = 17,787.82

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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.