Home / 15,902.31-21,949.17-9,191.82

Finding the Fourth Proportional to 15,902.31, 21,949.17 and 9,191.82

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Solution

The fourth proportional to 15,902.31, 21,949.17 and 9,191.82 is: 12,687.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,902.31 : 21,949.17 = 9,191.82 : x
  2. Step 2: Convert to fraction form
    15,902.31/21,949.17 = 9,191.82/x
  3. Step 3: Cross multiply
    15,902.31x = 21,949.17 × 9,191.82
  4. Step 4: Simplify right side
    15,902.31x = 201,752,819.79
  5. Step 5: Solve for x
    x = 201,752,819.79/15,902.31
  6. Step 6: Final answer
    x = 12,687.01

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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.