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Finding the Fourth Proportional to 18,452.79, 25,453.49 and 13,149.32

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Solution

The fourth proportional to 18,452.79, 25,453.49 and 13,149.32 is: 18,137.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,452.79 : 25,453.49 = 13,149.32 : x
  2. Step 2: Convert to fraction form
    18,452.79/25,453.49 = 13,149.32/x
  3. Step 3: Cross multiply
    18,452.79x = 25,453.49 × 13,149.32
  4. Step 4: Simplify right side
    18,452.79x = 334,696,019.38
  5. Step 5: Solve for x
    x = 334,696,019.38/18,452.79
  6. Step 6: Final answer
    x = 18,137.96

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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.