Home / 21,011,215.20-31,493,494.80-8,227,471.20

Finding the Fourth Proportional to 21,011,215.20, 31,493,494.80 and 8,227,471.20

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Solution

The fourth proportional to 21,011,215.20, 31,493,494.80 and 8,227,471.20 is: 12,332,072.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,011,215.20 : 31,493,494.80 = 8,227,471.20 : x
  2. Step 2: Convert to fraction form
    21,011,215.20/31,493,494.80 = 8,227,471.20/x
  3. Step 3: Cross multiply
    21,011,215.20x = 31,493,494.80 × 8,227,471.20
  4. Step 4: Simplify right side
    21,011,215.20x = 259,111,821,454,349.78
  5. Step 5: Solve for x
    x = 259,111,821,454,349.78/21,011,215.20
  6. Step 6: Final answer
    x = 12,332,072.13

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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.