Home / 20,776,722.70-31,165,084.05-8,642,153.20

Finding the Fourth Proportional to 20,776,722.70, 31,165,084.05 and 8,642,153.20

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Solution

The fourth proportional to 20,776,722.70, 31,165,084.05 and 8,642,153.20 is: 12,963,229.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,776,722.70 : 31,165,084.05 = 8,642,153.20 : x
  2. Step 2: Convert to fraction form
    20,776,722.70/31,165,084.05 = 8,642,153.20/x
  3. Step 3: Cross multiply
    20,776,722.70x = 31,165,084.05 × 8,642,153.20
  4. Step 4: Simplify right side
    20,776,722.70x = 269,333,430,850,976.44
  5. Step 5: Solve for x
    x = 269,333,430,850,976.44/20,776,722.70
  6. Step 6: Final answer
    x = 12,963,229.80

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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.