Home / 11,421.20-17,098.20-8,512.40

Finding the Fourth Proportional to 11,421.20, 17,098.20 and 8,512.40

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Solution

The fourth proportional to 11,421.20, 17,098.20 and 8,512.40 is: 12,743.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,421.20 : 17,098.20 = 8,512.40 : x
  2. Step 2: Convert to fraction form
    11,421.20/17,098.20 = 8,512.40/x
  3. Step 3: Cross multiply
    11,421.20x = 17,098.20 × 8,512.40
  4. Step 4: Simplify right side
    11,421.20x = 145,546,717.68
  5. Step 5: Solve for x
    x = 145,546,717.68/11,421.20
  6. Step 6: Final answer
    x = 12,743.56

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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.