Home / 13,613.14-18,777.98-8,568.61

Finding the Fourth Proportional to 13,613.14, 18,777.98 and 8,568.61

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Solution

The fourth proportional to 13,613.14, 18,777.98 and 8,568.61 is: 11,819.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,613.14 : 18,777.98 = 8,568.61 : x
  2. Step 2: Convert to fraction form
    13,613.14/18,777.98 = 8,568.61/x
  3. Step 3: Cross multiply
    13,613.14x = 18,777.98 × 8,568.61
  4. Step 4: Simplify right side
    13,613.14x = 160,901,187.21
  5. Step 5: Solve for x
    x = 160,901,187.21/13,613.14
  6. Step 6: Final answer
    x = 11,819.55

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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.