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Finding the Fourth Proportional to 18,449.61, 25,452.95 and 12,863.85

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Solution

The fourth proportional to 18,449.61, 25,452.95 and 12,863.85 is: 17,746.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,449.61 : 25,452.95 = 12,863.85 : x
  2. Step 2: Convert to fraction form
    18,449.61/25,452.95 = 12,863.85/x
  3. Step 3: Cross multiply
    18,449.61x = 25,452.95 × 12,863.85
  4. Step 4: Simplify right side
    18,449.61x = 327,422,866.54
  5. Step 5: Solve for x
    x = 327,422,866.54/18,449.61
  6. Step 6: Final answer
    x = 17,746.87

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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.