Home / 10,170.20-15,233.70-8,442.20

Finding the Fourth Proportional to 10,170.20, 15,233.70 and 8,442.20

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Solution

The fourth proportional to 10,170.20, 15,233.70 and 8,442.20 is: 12,645.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,170.20 : 15,233.70 = 8,442.20 : x
  2. Step 2: Convert to fraction form
    10,170.20/15,233.70 = 8,442.20/x
  3. Step 3: Cross multiply
    10,170.20x = 15,233.70 × 8,442.20
  4. Step 4: Simplify right side
    10,170.20x = 128,605,942.14
  5. Step 5: Solve for x
    x = 128,605,942.14/10,170.20
  6. Step 6: Final answer
    x = 12,645.37

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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.