Home / 20,951,990.70-31,404,658.05-8,168,246.70

Finding the Fourth Proportional to 20,951,990.70, 31,404,658.05 and 8,168,246.70

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Solution

The fourth proportional to 20,951,990.70, 31,404,658.05 and 8,168,246.70 is: 12,243,275.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,951,990.70 : 31,404,658.05 = 8,168,246.70 : x
  2. Step 2: Convert to fraction form
    20,951,990.70/31,404,658.05 = 8,168,246.70/x
  3. Step 3: Cross multiply
    20,951,990.70x = 31,404,658.05 × 8,168,246.70
  4. Step 4: Simplify right side
    20,951,990.70x = 256,520,994,481,540.94
  5. Step 5: Solve for x
    x = 256,520,994,481,540.94/20,951,990.70
  6. Step 6: Final answer
    x = 12,243,275.50

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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.