Home / 21,290,998.80-31,936,498.20-7,650,679.80

Finding the Fourth Proportional to 21,290,998.80, 31,936,498.20 and 7,650,679.80

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Solution

The fourth proportional to 21,290,998.80, 31,936,498.20 and 7,650,679.80 is: 11,476,019.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,290,998.80 : 31,936,498.20 = 7,650,679.80 : x
  2. Step 2: Convert to fraction form
    21,290,998.80/31,936,498.20 = 7,650,679.80/x
  3. Step 3: Cross multiply
    21,290,998.80x = 31,936,498.20 × 7,650,679.80
  4. Step 4: Simplify right side
    21,290,998.80x = 244,335,921,661,476.34
  5. Step 5: Solve for x
    x = 244,335,921,661,476.34/21,290,998.80
  6. Step 6: Final answer
    x = 11,476,019.70

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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.