Home / 20,375.52-28,119-11,423.22

Finding the Fourth Proportional to 20,375.52, 28,119 and 11,423.22

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Solution

The fourth proportional to 20,375.52, 28,119 and 11,423.22 is: 15,764.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,375.52 : 28,119 = 11,423.22 : x
  2. Step 2: Convert to fraction form
    20,375.52/28,119 = 11,423.22/x
  3. Step 3: Cross multiply
    20,375.52x = 28,119 × 11,423.22
  4. Step 4: Simplify right side
    20,375.52x = 321,209,523.18
  5. Step 5: Solve for x
    x = 321,209,523.18/20,375.52
  6. Step 6: Final answer
    x = 15,764.48

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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.