Home / 10,115.70-15,179.62-8,042.91

Finding the Fourth Proportional to 10,115.70, 15,179.62 and 8,042.91

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Solution

The fourth proportional to 10,115.70, 15,179.62 and 8,042.91 is: 12,069.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,115.70 : 15,179.62 = 8,042.91 : x
  2. Step 2: Convert to fraction form
    10,115.70/15,179.62 = 8,042.91/x
  3. Step 3: Cross multiply
    10,115.70x = 15,179.62 × 8,042.91
  4. Step 4: Simplify right side
    10,115.70x = 122,088,317.49
  5. Step 5: Solve for x
    x = 122,088,317.49/10,115.70
  6. Step 6: Final answer
    x = 12,069.19

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1.5x scale

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.