Home / 10,168.11-15,178.52-8,790.30

Finding the Fourth Proportional to 10,168.11, 15,178.52 and 8,790.30

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Solution

The fourth proportional to 10,168.11, 15,178.52 and 8,790.30 is: 13,121.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,168.11 : 15,178.52 = 8,790.30 : x
  2. Step 2: Convert to fraction form
    10,168.11/15,178.52 = 8,790.30/x
  3. Step 3: Cross multiply
    10,168.11x = 15,178.52 × 8,790.30
  4. Step 4: Simplify right side
    10,168.11x = 133,423,766.33
  5. Step 5: Solve for x
    x = 133,423,766.33/10,168.11
  6. Step 6: Final answer
    x = 13,121.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.