Home / 20,681,209.24-31,021,821.72-20,651,323.96

Finding the Fourth Proportional to 20,681,209.24, 31,021,821.72 and 20,651,323.96

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Solution

The fourth proportional to 20,681,209.24, 31,021,821.72 and 20,651,323.96 is: 30,976,993.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,681,209.24 : 31,021,821.72 = 20,651,323.96 : x
  2. Step 2: Convert to fraction form
    20,681,209.24/31,021,821.72 = 20,651,323.96/x
  3. Step 3: Cross multiply
    20,681,209.24x = 31,021,821.72 × 20,651,323.96
  4. Step 4: Simplify right side
    20,681,209.24x = 640,641,690,169,084.38
  5. Step 5: Solve for x
    x = 640,641,690,169,084.38/20,681,209.24
  6. Step 6: Final answer
    x = 30,976,993.79

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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.