Home / 21,317,121.92-29,399,037-15,109,891.04

Finding the Fourth Proportional to 21,317,121.92, 29,399,037 and 15,109,891.04

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Solution

The fourth proportional to 21,317,121.92, 29,399,037 and 15,109,891.04 is: 20,838,471.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,317,121.92 : 29,399,037 = 15,109,891.04 : x
  2. Step 2: Convert to fraction form
    21,317,121.92/29,399,037 = 15,109,891.04/x
  3. Step 3: Cross multiply
    21,317,121.92x = 29,399,037 × 15,109,891.04
  4. Step 4: Simplify right side
    21,317,121.92x = 444,216,245,750,928.44
  5. Step 5: Solve for x
    x = 444,216,245,750,928.44/21,317,121.92
  6. Step 6: Final answer
    x = 20,838,471.88

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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.