Home / 20,796,831.52-31,198,085.92-8,663,456.84

Finding the Fourth Proportional to 20,796,831.52, 31,198,085.92 and 8,663,456.84

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Solution

The fourth proportional to 20,796,831.52, 31,198,085.92 and 8,663,456.84 is: 12,996,367.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,796,831.52 : 31,198,085.92 = 8,663,456.84 : x
  2. Step 2: Convert to fraction form
    20,796,831.52/31,198,085.92 = 8,663,456.84/x
  3. Step 3: Cross multiply
    20,796,831.52x = 31,198,085.92 × 8,663,456.84
  4. Step 4: Simplify right side
    20,796,831.52x = 270,283,270,983,932.75
  5. Step 5: Solve for x
    x = 270,283,270,983,932.75/20,796,831.52
  6. Step 6: Final answer
    x = 12,996,367.78

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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.