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Finding the Fourth Proportional to 15,902.64, 21,959.55 and 9,944.46

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Solution

The fourth proportional to 15,902.64, 21,959.55 and 9,944.46 is: 13,732.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,902.64 : 21,959.55 = 9,944.46 : x
  2. Step 2: Convert to fraction form
    15,902.64/21,959.55 = 9,944.46/x
  3. Step 3: Cross multiply
    15,902.64x = 21,959.55 × 9,944.46
  4. Step 4: Simplify right side
    15,902.64x = 218,375,866.59
  5. Step 5: Solve for x
    x = 218,375,866.59/15,902.64
  6. Step 6: Final answer
    x = 13,732.05

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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.