Home / 18,132.75-27,240.82-12,880.53

Finding the Fourth Proportional to 18,132.75, 27,240.82 and 12,880.53

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Solution

The fourth proportional to 18,132.75, 27,240.82 and 12,880.53 is: 19,350.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,132.75 : 27,240.82 = 12,880.53 : x
  2. Step 2: Convert to fraction form
    18,132.75/27,240.82 = 12,880.53/x
  3. Step 3: Cross multiply
    18,132.75x = 27,240.82 × 12,880.53
  4. Step 4: Simplify right side
    18,132.75x = 350,876,167.03
  5. Step 5: Solve for x
    x = 350,876,167.03/18,132.75
  6. Step 6: Final answer
    x = 19,350.41

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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.