Home / 18,213.20-25,136.36-11,140.56

Finding the Fourth Proportional to 18,213.20, 25,136.36 and 11,140.56

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Solution

The fourth proportional to 18,213.20, 25,136.36 and 11,140.56 is: 15,375.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,213.20 : 25,136.36 = 11,140.56 : x
  2. Step 2: Convert to fraction form
    18,213.20/25,136.36 = 11,140.56/x
  3. Step 3: Cross multiply
    18,213.20x = 25,136.36 × 11,140.56
  4. Step 4: Simplify right side
    18,213.20x = 280,033,126.76
  5. Step 5: Solve for x
    x = 280,033,126.76/18,213.20
  6. Step 6: Final answer
    x = 15,375.28

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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.