Home / 15,015,990.88-20,721,269.34-8,489,230.12

Finding the Fourth Proportional to 15,015,990.88, 20,721,269.34 and 8,489,230.12

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Solution

The fourth proportional to 15,015,990.88, 20,721,269.34 and 8,489,230.12 is: 11,714,686.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,015,990.88 : 20,721,269.34 = 8,489,230.12 : x
  2. Step 2: Convert to fraction form
    15,015,990.88/20,721,269.34 = 8,489,230.12/x
  3. Step 3: Cross multiply
    15,015,990.88x = 20,721,269.34 × 8,489,230.12
  4. Step 4: Simplify right side
    15,015,990.88x = 175,907,623,805,760.50
  5. Step 5: Solve for x
    x = 175,907,623,805,760.50/15,015,990.88
  6. Step 6: Final answer
    x = 11,714,686.38

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.