Home / 20,366,145.68-28,105,763.24-11,198,781.20

Finding the Fourth Proportional to 20,366,145.68, 28,105,763.24 and 11,198,781.20

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Solution

The fourth proportional to 20,366,145.68, 28,105,763.24 and 11,198,781.20 is: 15,454,583.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,366,145.68 : 28,105,763.24 = 11,198,781.20 : x
  2. Step 2: Convert to fraction form
    20,366,145.68/28,105,763.24 = 11,198,781.20/x
  3. Step 3: Cross multiply
    20,366,145.68x = 28,105,763.24 × 11,198,781.20
  4. Step 4: Simplify right side
    20,366,145.68x = 314,750,292,983,763.06
  5. Step 5: Solve for x
    x = 314,750,292,983,763.06/20,366,145.68
  6. Step 6: Final answer
    x = 15,454,583.21

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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.