Home / 21,990,695.90-32,986,043.85-11,912,999.90

Finding the Fourth Proportional to 21,990,695.90, 32,986,043.85 and 11,912,999.90

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Solution

The fourth proportional to 21,990,695.90, 32,986,043.85 and 11,912,999.90 is: 17,869,499.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,990,695.90 : 32,986,043.85 = 11,912,999.90 : x
  2. Step 2: Convert to fraction form
    21,990,695.90/32,986,043.85 = 11,912,999.90/x
  3. Step 3: Cross multiply
    21,990,695.90x = 32,986,043.85 × 11,912,999.90
  4. Step 4: Simplify right side
    21,990,695.90x = 392,962,737,086,445.62
  5. Step 5: Solve for x
    x = 392,962,737,086,445.62/21,990,695.90
  6. Step 6: Final answer
    x = 17,869,499.85

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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.