Home / 15,481.82-21,354.03-9,516.78

Finding the Fourth Proportional to 15,481.82, 21,354.03 and 9,516.78

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Solution

The fourth proportional to 15,481.82, 21,354.03 and 9,516.78 is: 13,126.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,481.82 : 21,354.03 = 9,516.78 : x
  2. Step 2: Convert to fraction form
    15,481.82/21,354.03 = 9,516.78/x
  3. Step 3: Cross multiply
    15,481.82x = 21,354.03 × 9,516.78
  4. Step 4: Simplify right side
    15,481.82x = 203,221,605.62
  5. Step 5: Solve for x
    x = 203,221,605.62/15,481.82
  6. Step 6: Final answer
    x = 13,126.47

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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.