Home / 15,511,040.38-21,399,695.13-8,981,105.50

Finding the Fourth Proportional to 15,511,040.38, 21,399,695.13 and 8,981,105.50

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Solution

The fourth proportional to 15,511,040.38, 21,399,695.13 and 8,981,105.50 is: 12,390,717.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,511,040.38 : 21,399,695.13 = 8,981,105.50 : x
  2. Step 2: Convert to fraction form
    15,511,040.38/21,399,695.13 = 8,981,105.50/x
  3. Step 3: Cross multiply
    15,511,040.38x = 21,399,695.13 × 8,981,105.50
  4. Step 4: Simplify right side
    15,511,040.38x = 192,192,919,630,366.22
  5. Step 5: Solve for x
    x = 192,192,919,630,366.22/15,511,040.38
  6. Step 6: Final answer
    x = 12,390,717.51

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1.5x scale

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.