Home / 20,747,680.40-31,100,525.40-12,223,629.20

Finding the Fourth Proportional to 20,747,680.40, 31,100,525.40 and 12,223,629.20

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Solution

The fourth proportional to 20,747,680.40, 31,100,525.40 and 12,223,629.20 is: 18,323,074.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,747,680.40 : 31,100,525.40 = 12,223,629.20 : x
  2. Step 2: Convert to fraction form
    20,747,680.40/31,100,525.40 = 12,223,629.20/x
  3. Step 3: Cross multiply
    20,747,680.40x = 31,100,525.40 × 12,223,629.20
  4. Step 4: Simplify right side
    20,747,680.40x = 380,161,290,414,781.62
  5. Step 5: Solve for x
    x = 380,161,290,414,781.62/20,747,680.40
  6. Step 6: Final answer
    x = 18,323,074.34

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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.