Home / 10,042.38-15,066.81-8,415.90

Finding the Fourth Proportional to 10,042.38, 15,066.81 and 8,415.90

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Solution

The fourth proportional to 10,042.38, 15,066.81 and 8,415.90 is: 12,626.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,042.38 : 15,066.81 = 8,415.90 : x
  2. Step 2: Convert to fraction form
    10,042.38/15,066.81 = 8,415.90/x
  3. Step 3: Cross multiply
    10,042.38x = 15,066.81 × 8,415.90
  4. Step 4: Simplify right side
    10,042.38x = 126,800,766.28
  5. Step 5: Solve for x
    x = 126,800,766.28/10,042.38
  6. Step 6: Final answer
    x = 12,626.57

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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.