Home / 10,118.70-15,171.45-9,081.90

Finding the Fourth Proportional to 10,118.70, 15,171.45 and 9,081.90

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Solution

The fourth proportional to 10,118.70, 15,171.45 and 9,081.90 is: 13,616.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,118.70 : 15,171.45 = 9,081.90 : x
  2. Step 2: Convert to fraction form
    10,118.70/15,171.45 = 9,081.90/x
  3. Step 3: Cross multiply
    10,118.70x = 15,171.45 × 9,081.90
  4. Step 4: Simplify right side
    10,118.70x = 137,785,591.76
  5. Step 5: Solve for x
    x = 137,785,591.76/10,118.70
  6. Step 6: Final answer
    x = 13,616.93

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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.