Home / 28,212.38-42,321.13-7,435.88

Finding the Fourth Proportional to 28,212.38, 42,321.13 and 7,435.88

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Solution

The fourth proportional to 28,212.38, 42,321.13 and 7,435.88 is: 11,154.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,212.38 : 42,321.13 = 7,435.88 : x
  2. Step 2: Convert to fraction form
    28,212.38/42,321.13 = 7,435.88/x
  3. Step 3: Cross multiply
    28,212.38x = 42,321.13 × 7,435.88
  4. Step 4: Simplify right side
    28,212.38x = 314,694,613.95
  5. Step 5: Solve for x
    x = 314,694,613.95/28,212.38
  6. Step 6: Final answer
    x = 11,154.49

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.