Home / 28,121.16-42,167.36-9,394.44

Finding the Fourth Proportional to 28,121.16, 42,167.36 and 9,394.44

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Solution

The fourth proportional to 28,121.16, 42,167.36 and 9,394.44 is: 14,086.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,121.16 : 42,167.36 = 9,394.44 : x
  2. Step 2: Convert to fraction form
    28,121.16/42,167.36 = 9,394.44/x
  3. Step 3: Cross multiply
    28,121.16x = 42,167.36 × 9,394.44
  4. Step 4: Simplify right side
    28,121.16x = 396,138,733.48
  5. Step 5: Solve for x
    x = 396,138,733.48/28,121.16
  6. Step 6: Final answer
    x = 14,086.86

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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.