Home / 10,874.15-15,013.56-8,351.75

Finding the Fourth Proportional to 10,874.15, 15,013.56 and 8,351.75

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Solution

The fourth proportional to 10,874.15, 15,013.56 and 8,351.75 is: 11,530.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,874.15 : 15,013.56 = 8,351.75 : x
  2. Step 2: Convert to fraction form
    10,874.15/15,013.56 = 8,351.75/x
  3. Step 3: Cross multiply
    10,874.15x = 15,013.56 × 8,351.75
  4. Step 4: Simplify right side
    10,874.15x = 125,389,521.60
  5. Step 5: Solve for x
    x = 125,389,521.60/10,874.15
  6. Step 6: Final answer
    x = 11,530.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.