Home / 28,371.75-42,557.57-17,129.32

Finding the Fourth Proportional to 28,371.75, 42,557.57 and 17,129.32

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Solution

The fourth proportional to 28,371.75, 42,557.57 and 17,129.32 is: 25,693.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,371.75 : 42,557.57 = 17,129.32 : x
  2. Step 2: Convert to fraction form
    28,371.75/42,557.57 = 17,129.32/x
  3. Step 3: Cross multiply
    28,371.75x = 42,557.57 × 17,129.32
  4. Step 4: Simplify right side
    28,371.75x = 728,982,346.53
  5. Step 5: Solve for x
    x = 728,982,346.53/28,371.75
  6. Step 6: Final answer
    x = 25,693.95

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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.