Home / 20,566.20-28,381.26-11,134.68

Finding the Fourth Proportional to 20,566.20, 28,381.26 and 11,134.68

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Solution

The fourth proportional to 20,566.20, 28,381.26 and 11,134.68 is: 15,365.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,566.20 : 28,381.26 = 11,134.68 : x
  2. Step 2: Convert to fraction form
    20,566.20/28,381.26 = 11,134.68/x
  3. Step 3: Cross multiply
    20,566.20x = 28,381.26 × 11,134.68
  4. Step 4: Simplify right side
    20,566.20x = 316,016,248.10
  5. Step 5: Solve for x
    x = 316,016,248.10/20,566.20
  6. Step 6: Final answer
    x = 15,365.81

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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.