Home / 11,981.20-16,530.60-7,265.20

Finding the Fourth Proportional to 11,981.20, 16,530.60 and 7,265.20

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Solution

The fourth proportional to 11,981.20, 16,530.60 and 7,265.20 is: 10,023.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,981.20 : 16,530.60 = 7,265.20 : x
  2. Step 2: Convert to fraction form
    11,981.20/16,530.60 = 7,265.20/x
  3. Step 3: Cross multiply
    11,981.20x = 16,530.60 × 7,265.20
  4. Step 4: Simplify right side
    11,981.20x = 120,098,115.12
  5. Step 5: Solve for x
    x = 120,098,115.12/11,981.20
  6. Step 6: Final answer
    x = 10,023.88

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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.