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Finding the Fourth Proportional to 12,306.64, 18,429.04 and 7,607.32

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Solution

The fourth proportional to 12,306.64, 18,429.04 and 7,607.32 is: 11,391.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,306.64 : 18,429.04 = 7,607.32 : x
  2. Step 2: Convert to fraction form
    12,306.64/18,429.04 = 7,607.32/x
  3. Step 3: Cross multiply
    12,306.64x = 18,429.04 × 7,607.32
  4. Step 4: Simplify right side
    12,306.64x = 140,195,604.57
  5. Step 5: Solve for x
    x = 140,195,604.57/12,306.64
  6. Step 6: Final answer
    x = 11,391.87

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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.