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Finding the Fourth Proportional to 16,986.60, 25,431.30 and 15,042.60

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Solution

The fourth proportional to 16,986.60, 25,431.30 and 15,042.60 is: 22,520.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,986.60 : 25,431.30 = 15,042.60 : x
  2. Step 2: Convert to fraction form
    16,986.60/25,431.30 = 15,042.60/x
  3. Step 3: Cross multiply
    16,986.60x = 25,431.30 × 15,042.60
  4. Step 4: Simplify right side
    16,986.60x = 382,552,873.38
  5. Step 5: Solve for x
    x = 382,552,873.38/16,986.60
  6. Step 6: Final answer
    x = 22,520.86

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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.