Home / 21,120,886.66-31,694,657.24-8,990,330.74

Finding the Fourth Proportional to 21,120,886.66, 31,694,657.24 and 8,990,330.74

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Solution

The fourth proportional to 21,120,886.66, 31,694,657.24 and 8,990,330.74 is: 13,491,169.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,120,886.66 : 31,694,657.24 = 8,990,330.74 : x
  2. Step 2: Convert to fraction form
    21,120,886.66/31,694,657.24 = 8,990,330.74/x
  3. Step 3: Cross multiply
    21,120,886.66x = 31,694,657.24 × 8,990,330.74
  4. Step 4: Simplify right side
    21,120,886.66x = 284,945,451,278,535.56
  5. Step 5: Solve for x
    x = 284,945,451,278,535.56/21,120,886.66
  6. Step 6: Final answer
    x = 13,491,169.00

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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.