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Finding the Fourth Proportional to 18,310.65, 25,267.32 and 12,350.40

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Solution

The fourth proportional to 18,310.65, 25,267.32 and 12,350.40 is: 17,042.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,310.65 : 25,267.32 = 12,350.40 : x
  2. Step 2: Convert to fraction form
    18,310.65/25,267.32 = 12,350.40/x
  3. Step 3: Cross multiply
    18,310.65x = 25,267.32 × 12,350.40
  4. Step 4: Simplify right side
    18,310.65x = 312,061,508.93
  5. Step 5: Solve for x
    x = 312,061,508.93/18,310.65
  6. Step 6: Final answer
    x = 17,042.62

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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.