Home / 20,589.28-28,412.79-11,514.61

Finding the Fourth Proportional to 20,589.28, 28,412.79 and 11,514.61

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Solution

The fourth proportional to 20,589.28, 28,412.79 and 11,514.61 is: 15,889.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,589.28 : 28,412.79 = 11,514.61 : x
  2. Step 2: Convert to fraction form
    20,589.28/28,412.79 = 11,514.61/x
  3. Step 3: Cross multiply
    20,589.28x = 28,412.79 × 11,514.61
  4. Step 4: Simplify right side
    20,589.28x = 327,162,195.86
  5. Step 5: Solve for x
    x = 327,162,195.86/20,589.28
  6. Step 6: Final answer
    x = 15,889.93

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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.