Home / 10,997.28-15,187.68-8,452.80

Finding the Fourth Proportional to 10,997.28, 15,187.68 and 8,452.80

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Solution

The fourth proportional to 10,997.28, 15,187.68 and 8,452.80 is: 11,673.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,997.28 : 15,187.68 = 8,452.80 : x
  2. Step 2: Convert to fraction form
    10,997.28/15,187.68 = 8,452.80/x
  3. Step 3: Cross multiply
    10,997.28x = 15,187.68 × 8,452.80
  4. Step 4: Simplify right side
    10,997.28x = 128,378,421.50
  5. Step 5: Solve for x
    x = 128,378,421.50/10,997.28
  6. Step 6: Final answer
    x = 11,673.65

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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.