Home / 21,121,333.20-31,681,999.80-16,869,805.20

Finding the Fourth Proportional to 21,121,333.20, 31,681,999.80 and 16,869,805.20

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Solution

The fourth proportional to 21,121,333.20, 31,681,999.80 and 16,869,805.20 is: 25,304,707.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,121,333.20 : 31,681,999.80 = 16,869,805.20 : x
  2. Step 2: Convert to fraction form
    21,121,333.20/31,681,999.80 = 16,869,805.20/x
  3. Step 3: Cross multiply
    21,121,333.20x = 31,681,999.80 × 16,869,805.20
  4. Step 4: Simplify right side
    21,121,333.20x = 534,469,164,972,438.94
  5. Step 5: Solve for x
    x = 534,469,164,972,438.94/21,121,333.20
  6. Step 6: Final answer
    x = 25,304,707.80

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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.