Home / 21,220,540.88-31,840,218.04-11,120,759.76

Finding the Fourth Proportional to 21,220,540.88, 31,840,218.04 and 11,120,759.76

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Solution

The fourth proportional to 21,220,540.88, 31,840,218.04 and 11,120,759.76 is: 16,686,069.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,220,540.88 : 31,840,218.04 = 11,120,759.76 : x
  2. Step 2: Convert to fraction form
    21,220,540.88/31,840,218.04 = 11,120,759.76/x
  3. Step 3: Cross multiply
    21,220,540.88x = 31,840,218.04 × 11,120,759.76
  4. Step 4: Simplify right side
    21,220,540.88x = 354,087,415,528,858.06
  5. Step 5: Solve for x
    x = 354,087,415,528,858.06/21,220,540.88
  6. Step 6: Final answer
    x = 16,686,069.29

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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.