Home / 28,179.66-42,311.34-15,724.02

Finding the Fourth Proportional to 28,179.66, 42,311.34 and 15,724.02

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Solution

The fourth proportional to 28,179.66, 42,311.34 and 15,724.02 is: 23,609.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,179.66 : 42,311.34 = 15,724.02 : x
  2. Step 2: Convert to fraction form
    28,179.66/42,311.34 = 15,724.02/x
  3. Step 3: Cross multiply
    28,179.66x = 42,311.34 × 15,724.02
  4. Step 4: Simplify right side
    28,179.66x = 665,304,356.39
  5. Step 5: Solve for x
    x = 665,304,356.39/28,179.66
  6. Step 6: Final answer
    x = 23,609.38

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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.