Home / 15,911.70-23,867.55-11,221.80

Finding the Fourth Proportional to 15,911.70, 23,867.55 and 11,221.80

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Solution

The fourth proportional to 15,911.70, 23,867.55 and 11,221.80 is: 16,832.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,911.70 : 23,867.55 = 11,221.80 : x
  2. Step 2: Convert to fraction form
    15,911.70/23,867.55 = 11,221.80/x
  3. Step 3: Cross multiply
    15,911.70x = 23,867.55 × 11,221.80
  4. Step 4: Simplify right side
    15,911.70x = 267,836,872.59
  5. Step 5: Solve for x
    x = 267,836,872.59/15,911.70
  6. Step 6: Final answer
    x = 16,832.70

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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.