Home / 20,758,537.20-31,137,805.80-5,405,797.20

Finding the Fourth Proportional to 20,758,537.20, 31,137,805.80 and 5,405,797.20

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Solution

The fourth proportional to 20,758,537.20, 31,137,805.80 and 5,405,797.20 is: 8,108,695.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,758,537.20 : 31,137,805.80 = 5,405,797.20 : x
  2. Step 2: Convert to fraction form
    20,758,537.20/31,137,805.80 = 5,405,797.20/x
  3. Step 3: Cross multiply
    20,758,537.20x = 31,137,805.80 × 5,405,797.20
  4. Step 4: Simplify right side
    20,758,537.20x = 168,324,663,407,783.78
  5. Step 5: Solve for x
    x = 168,324,663,407,783.78/20,758,537.20
  6. Step 6: Final answer
    x = 8,108,695.80

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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.