Home / 21,146,121.60-31,698,187.20-9,766,723.20

Finding the Fourth Proportional to 21,146,121.60, 31,698,187.20 and 9,766,723.20

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Solution

The fourth proportional to 21,146,121.60, 31,698,187.20 and 9,766,723.20 is: 14,640,387.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,146,121.60 : 31,698,187.20 = 9,766,723.20 : x
  2. Step 2: Convert to fraction form
    21,146,121.60/31,698,187.20 = 9,766,723.20/x
  3. Step 3: Cross multiply
    21,146,121.60x = 31,698,187.20 × 9,766,723.20
  4. Step 4: Simplify right side
    21,146,121.60x = 309,587,420,324,183
  5. Step 5: Solve for x
    x = 309,587,420,324,183/21,146,121.60
  6. Step 6: Final answer
    x = 14,640,387.78

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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.