Home / 28,142.40-42,192.72-17,046.96

Finding the Fourth Proportional to 28,142.40, 42,192.72 and 17,046.96

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Solution

The fourth proportional to 28,142.40, 42,192.72 and 17,046.96 is: 25,557.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,142.40 : 42,192.72 = 17,046.96 : x
  2. Step 2: Convert to fraction form
    28,142.40/42,192.72 = 17,046.96/x
  3. Step 3: Cross multiply
    28,142.40x = 42,192.72 × 17,046.96
  4. Step 4: Simplify right side
    28,142.40x = 719,257,610.13
  5. Step 5: Solve for x
    x = 719,257,610.13/28,142.40
  6. Step 6: Final answer
    x = 25,557.79

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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.