Home / 15,481.72-21,365.22-8,767.20

Finding the Fourth Proportional to 15,481.72, 21,365.22 and 8,767.20

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Solution

The fourth proportional to 15,481.72, 21,365.22 and 8,767.20 is: 12,098.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,481.72 : 21,365.22 = 8,767.20 : x
  2. Step 2: Convert to fraction form
    15,481.72/21,365.22 = 8,767.20/x
  3. Step 3: Cross multiply
    15,481.72x = 21,365.22 × 8,767.20
  4. Step 4: Simplify right side
    15,481.72x = 187,313,156.78
  5. Step 5: Solve for x
    x = 187,313,156.78/15,481.72
  6. Step 6: Final answer
    x = 12,098.99

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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.