Home / 28,091.30-42,138.14-9,371.95

Finding the Fourth Proportional to 28,091.30, 42,138.14 and 9,371.95

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Solution

The fourth proportional to 28,091.30, 42,138.14 and 9,371.95 is: 14,058.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,091.30 : 42,138.14 = 9,371.95 : x
  2. Step 2: Convert to fraction form
    28,091.30/42,138.14 = 9,371.95/x
  3. Step 3: Cross multiply
    28,091.30x = 42,138.14 × 9,371.95
  4. Step 4: Simplify right side
    28,091.30x = 394,916,388.97
  5. Step 5: Solve for x
    x = 394,916,388.97/28,091.30
  6. Step 6: Final answer
    x = 14,058.32

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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.