Home / 20,489.87-28,273.68-11,537.14

Finding the Fourth Proportional to 20,489.87, 28,273.68 and 11,537.14

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Solution

The fourth proportional to 20,489.87, 28,273.68 and 11,537.14 is: 15,919.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,489.87 : 28,273.68 = 11,537.14 : x
  2. Step 2: Convert to fraction form
    20,489.87/28,273.68 = 11,537.14/x
  3. Step 3: Cross multiply
    20,489.87x = 28,273.68 × 11,537.14
  4. Step 4: Simplify right side
    20,489.87x = 326,197,475.16
  5. Step 5: Solve for x
    x = 326,197,475.16/20,489.87
  6. Step 6: Final answer
    x = 15,919.94

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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.