Home / 20,743,255.20-31,114,882.80-19,680,373.20

Finding the Fourth Proportional to 20,743,255.20, 31,114,882.80 and 19,680,373.20

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Solution

The fourth proportional to 20,743,255.20, 31,114,882.80 and 19,680,373.20 is: 29,520,559.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,743,255.20 : 31,114,882.80 = 19,680,373.20 : x
  2. Step 2: Convert to fraction form
    20,743,255.20/31,114,882.80 = 19,680,373.20/x
  3. Step 3: Cross multiply
    20,743,255.20x = 31,114,882.80 × 19,680,373.20
  4. Step 4: Simplify right side
    20,743,255.20x = 612,352,505,578,261
  5. Step 5: Solve for x
    x = 612,352,505,578,261/20,743,255.20
  6. Step 6: Final answer
    x = 29,520,559.80

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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.