Home / 20,433.14-28,216.17-12,892.85

Finding the Fourth Proportional to 20,433.14, 28,216.17 and 12,892.85

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Solution

The fourth proportional to 20,433.14, 28,216.17 and 12,892.85 is: 17,803.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,433.14 : 28,216.17 = 12,892.85 : x
  2. Step 2: Convert to fraction form
    20,433.14/28,216.17 = 12,892.85/x
  3. Step 3: Cross multiply
    20,433.14x = 28,216.17 × 12,892.85
  4. Step 4: Simplify right side
    20,433.14x = 363,786,706.30
  5. Step 5: Solve for x
    x = 363,786,706.30/20,433.14
  6. Step 6: Final answer
    x = 17,803.76

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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.