Home / 13,200.28-18,211.26-7,610.20

Finding the Fourth Proportional to 13,200.28, 18,211.26 and 7,610.20

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Solution

The fourth proportional to 13,200.28, 18,211.26 and 7,610.20 is: 10,499.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,200.28 : 18,211.26 = 7,610.20 : x
  2. Step 2: Convert to fraction form
    13,200.28/18,211.26 = 7,610.20/x
  3. Step 3: Cross multiply
    13,200.28x = 18,211.26 × 7,610.20
  4. Step 4: Simplify right side
    13,200.28x = 138,591,330.85
  5. Step 5: Solve for x
    x = 138,591,330.85/13,200.28
  6. Step 6: Final answer
    x = 10,499.12

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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.