Home / 11,037.47-15,221.28-8,515.60

Finding the Fourth Proportional to 11,037.47, 15,221.28 and 8,515.60

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Solution

The fourth proportional to 11,037.47, 15,221.28 and 8,515.60 is: 11,743.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,037.47 : 15,221.28 = 8,515.60 : x
  2. Step 2: Convert to fraction form
    11,037.47/15,221.28 = 8,515.60/x
  3. Step 3: Cross multiply
    11,037.47x = 15,221.28 × 8,515.60
  4. Step 4: Simplify right side
    11,037.47x = 129,618,325.85
  5. Step 5: Solve for x
    x = 129,618,325.85/11,037.47
  6. Step 6: Final answer
    x = 11,743.49

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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.