Home / 20,992,936.80-31,489,405.20-7,528,015.20

Finding the Fourth Proportional to 20,992,936.80, 31,489,405.20 and 7,528,015.20

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Solution

The fourth proportional to 20,992,936.80, 31,489,405.20 and 7,528,015.20 is: 11,292,022.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,992,936.80 : 31,489,405.20 = 7,528,015.20 : x
  2. Step 2: Convert to fraction form
    20,992,936.80/31,489,405.20 = 7,528,015.20/x
  3. Step 3: Cross multiply
    20,992,936.80x = 31,489,405.20 × 7,528,015.20
  4. Step 4: Simplify right side
    20,992,936.80x = 237,052,720,984,559.03
  5. Step 5: Solve for x
    x = 237,052,720,984,559.03/20,992,936.80
  6. Step 6: Final answer
    x = 11,292,022.80

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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.