Home / 13,612.62-18,785.61-8,306.58

Finding the Fourth Proportional to 13,612.62, 18,785.61 and 8,306.58

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Solution

The fourth proportional to 13,612.62, 18,785.61 and 8,306.58 is: 11,463.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,612.62 : 18,785.61 = 8,306.58 : x
  2. Step 2: Convert to fraction form
    13,612.62/18,785.61 = 8,306.58/x
  3. Step 3: Cross multiply
    13,612.62x = 18,785.61 × 8,306.58
  4. Step 4: Simplify right side
    13,612.62x = 156,044,172.31
  5. Step 5: Solve for x
    x = 156,044,172.31/13,612.62
  6. Step 6: Final answer
    x = 11,463.20

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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.