Home / 20,526.26-28,331.56-13,375.78

Finding the Fourth Proportional to 20,526.26, 28,331.56 and 13,375.78

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Solution

The fourth proportional to 20,526.26, 28,331.56 and 13,375.78 is: 18,462.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,526.26 : 28,331.56 = 13,375.78 : x
  2. Step 2: Convert to fraction form
    20,526.26/28,331.56 = 13,375.78/x
  3. Step 3: Cross multiply
    20,526.26x = 28,331.56 × 13,375.78
  4. Step 4: Simplify right side
    20,526.26x = 378,956,713.62
  5. Step 5: Solve for x
    x = 378,956,713.62/20,526.26
  6. Step 6: Final answer
    x = 18,462.04

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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.