Home / 20,742.52-28,624.44-11,310.88

Finding the Fourth Proportional to 20,742.52, 28,624.44 and 11,310.88

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Solution

The fourth proportional to 20,742.52, 28,624.44 and 11,310.88 is: 15,608.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,742.52 : 28,624.44 = 11,310.88 : x
  2. Step 2: Convert to fraction form
    20,742.52/28,624.44 = 11,310.88/x
  3. Step 3: Cross multiply
    20,742.52x = 28,624.44 × 11,310.88
  4. Step 4: Simplify right side
    20,742.52x = 323,767,605.91
  5. Step 5: Solve for x
    x = 323,767,605.91/20,742.52
  6. Step 6: Final answer
    x = 15,608.88

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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.