Home / 20,618.13-28,452.85-11,665.56

Finding the Fourth Proportional to 20,618.13, 28,452.85 and 11,665.56

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Solution

The fourth proportional to 20,618.13, 28,452.85 and 11,665.56 is: 16,098.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,618.13 : 28,452.85 = 11,665.56 : x
  2. Step 2: Convert to fraction form
    20,618.13/28,452.85 = 11,665.56/x
  3. Step 3: Cross multiply
    20,618.13x = 28,452.85 × 11,665.56
  4. Step 4: Simplify right side
    20,618.13x = 331,918,428.85
  5. Step 5: Solve for x
    x = 331,918,428.85/20,618.13
  6. Step 6: Final answer
    x = 16,098.38

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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.