Home / 14,581.76-20,121.60-8,613.68

Finding the Fourth Proportional to 14,581.76, 20,121.60 and 8,613.68

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Solution

The fourth proportional to 14,581.76, 20,121.60 and 8,613.68 is: 11,886.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,581.76 : 20,121.60 = 8,613.68 : x
  2. Step 2: Convert to fraction form
    14,581.76/20,121.60 = 8,613.68/x
  3. Step 3: Cross multiply
    14,581.76x = 20,121.60 × 8,613.68
  4. Step 4: Simplify right side
    14,581.76x = 173,321,023.49
  5. Step 5: Solve for x
    x = 173,321,023.49/14,581.76
  6. Step 6: Final answer
    x = 11,886.15

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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.