Home / 20,902.66-28,847.17-11,949.93

Finding the Fourth Proportional to 20,902.66, 28,847.17 and 11,949.93

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Solution

The fourth proportional to 20,902.66, 28,847.17 and 11,949.93 is: 16,491.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,902.66 : 28,847.17 = 11,949.93 : x
  2. Step 2: Convert to fraction form
    20,902.66/28,847.17 = 11,949.93/x
  3. Step 3: Cross multiply
    20,902.66x = 28,847.17 × 11,949.93
  4. Step 4: Simplify right side
    20,902.66x = 344,721,677.14
  5. Step 5: Solve for x
    x = 344,721,677.14/20,902.66
  6. Step 6: Final answer
    x = 16,491.76

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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.