Home / 20,561,222.88-28,374,063.12-11,393,785.44

Finding the Fourth Proportional to 20,561,222.88, 28,374,063.12 and 11,393,785.44

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Solution

The fourth proportional to 20,561,222.88, 28,374,063.12 and 11,393,785.44 is: 15,723,188.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,561,222.88 : 28,374,063.12 = 11,393,785.44 : x
  2. Step 2: Convert to fraction form
    20,561,222.88/28,374,063.12 = 11,393,785.44/x
  3. Step 3: Cross multiply
    20,561,222.88x = 28,374,063.12 × 11,393,785.44
  4. Step 4: Simplify right side
    20,561,222.88x = 323,287,987,250,297
  5. Step 5: Solve for x
    x = 323,287,987,250,297/20,561,222.88
  6. Step 6: Final answer
    x = 15,723,188.70

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.