Home / 20,743,261.20-31,114,891.80-19,680,379.20

Finding the Fourth Proportional to 20,743,261.20, 31,114,891.80 and 19,680,379.20

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Solution

The fourth proportional to 20,743,261.20, 31,114,891.80 and 19,680,379.20 is: 29,520,568.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,743,261.20 : 31,114,891.80 = 19,680,379.20 : x
  2. Step 2: Convert to fraction form
    20,743,261.20/31,114,891.80 = 19,680,379.20/x
  3. Step 3: Cross multiply
    20,743,261.20x = 31,114,891.80 × 19,680,379.20
  4. Step 4: Simplify right side
    20,743,261.20x = 612,352,869,390,970.50
  5. Step 5: Solve for x
    x = 612,352,869,390,970.50/20,743,261.20
  6. Step 6: Final answer
    x = 29,520,568.80

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1.5x scale

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.