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Finding the Fourth Proportional to 18,253.50, 25,205.16 and 12,304.86

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Solution

The fourth proportional to 18,253.50, 25,205.16 and 12,304.86 is: 16,991.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,253.50 : 25,205.16 = 12,304.86 : x
  2. Step 2: Convert to fraction form
    18,253.50/25,205.16 = 12,304.86/x
  3. Step 3: Cross multiply
    18,253.50x = 25,205.16 × 12,304.86
  4. Step 4: Simplify right side
    18,253.50x = 310,145,965.08
  5. Step 5: Solve for x
    x = 310,145,965.08/18,253.50
  6. Step 6: Final answer
    x = 16,991.04

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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.