Home / 12,785.67-19,168.92-8,613.99

Finding the Fourth Proportional to 12,785.67, 19,168.92 and 8,613.99

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Solution

The fourth proportional to 12,785.67, 19,168.92 and 8,613.99 is: 12,914.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,785.67 : 19,168.92 = 8,613.99 : x
  2. Step 2: Convert to fraction form
    12,785.67/19,168.92 = 8,613.99/x
  3. Step 3: Cross multiply
    12,785.67x = 19,168.92 × 8,613.99
  4. Step 4: Simplify right side
    12,785.67x = 165,120,885.19
  5. Step 5: Solve for x
    x = 165,120,885.19/12,785.67
  6. Step 6: Final answer
    x = 12,914.53

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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.