Home / 15,187,819.12-20,959,245.93-8,218,496.73

Finding the Fourth Proportional to 15,187,819.12, 20,959,245.93 and 8,218,496.73

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Solution

The fourth proportional to 15,187,819.12, 20,959,245.93 and 8,218,496.73 is: 11,341,555.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,187,819.12 : 20,959,245.93 = 8,218,496.73 : x
  2. Step 2: Convert to fraction form
    15,187,819.12/20,959,245.93 = 8,218,496.73/x
  3. Step 3: Cross multiply
    15,187,819.12x = 20,959,245.93 × 8,218,496.73
  4. Step 4: Simplify right side
    15,187,819.12x = 172,253,494,138,970.81
  5. Step 5: Solve for x
    x = 172,253,494,138,970.81/15,187,819.12
  6. Step 6: Final answer
    x = 11,341,555.54

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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.