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Finding the Fourth Proportional to 18,505.53, 25,531.34 and 10,542.15

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Solution

The fourth proportional to 18,505.53, 25,531.34 and 10,542.15 is: 14,544.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,505.53 : 25,531.34 = 10,542.15 : x
  2. Step 2: Convert to fraction form
    18,505.53/25,531.34 = 10,542.15/x
  3. Step 3: Cross multiply
    18,505.53x = 25,531.34 × 10,542.15
  4. Step 4: Simplify right side
    18,505.53x = 269,155,163.27
  5. Step 5: Solve for x
    x = 269,155,163.27/18,505.53
  6. Step 6: Final answer
    x = 14,544.58

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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.