Home / 11,140.38-15,373.72-6,172.38

Finding the Fourth Proportional to 11,140.38, 15,373.72 and 6,172.38

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Solution

The fourth proportional to 11,140.38, 15,373.72 and 6,172.38 is: 8,517.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,140.38 : 15,373.72 = 6,172.38 : x
  2. Step 2: Convert to fraction form
    11,140.38/15,373.72 = 6,172.38/x
  3. Step 3: Cross multiply
    11,140.38x = 15,373.72 × 6,172.38
  4. Step 4: Simplify right side
    11,140.38x = 94,892,441.85
  5. Step 5: Solve for x
    x = 94,892,441.85/11,140.38
  6. Step 6: Final answer
    x = 8,517.88

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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.