Home / 20,862,100.80-31,293,151.20-17,129,620.80

Finding the Fourth Proportional to 20,862,100.80, 31,293,151.20 and 17,129,620.80

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Solution

The fourth proportional to 20,862,100.80, 31,293,151.20 and 17,129,620.80 is: 25,694,431.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,862,100.80 : 31,293,151.20 = 17,129,620.80 : x
  2. Step 2: Convert to fraction form
    20,862,100.80/31,293,151.20 = 17,129,620.80/x
  3. Step 3: Cross multiply
    20,862,100.80x = 31,293,151.20 × 17,129,620.80
  4. Step 4: Simplify right side
    20,862,100.80x = 536,039,813,693,065
  5. Step 5: Solve for x
    x = 536,039,813,693,065/20,862,100.80
  6. Step 6: Final answer
    x = 25,694,431.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.