Home / 15,564.12-21,481.89-9,516.47

Finding the Fourth Proportional to 15,564.12, 21,481.89 and 9,516.47

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Solution

The fourth proportional to 15,564.12, 21,481.89 and 9,516.47 is: 13,134.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,564.12 : 21,481.89 = 9,516.47 : x
  2. Step 2: Convert to fraction form
    15,564.12/21,481.89 = 9,516.47/x
  3. Step 3: Cross multiply
    15,564.12x = 21,481.89 × 9,516.47
  4. Step 4: Simplify right side
    15,564.12x = 204,431,793.00
  5. Step 5: Solve for x
    x = 204,431,793.00/15,564.12
  6. Step 6: Final answer
    x = 13,134.82

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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.