Home / 20,385,748.64-28,132,337.73-11,218,391.39

Finding the Fourth Proportional to 20,385,748.64, 28,132,337.73 and 11,218,391.39

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Solution

The fourth proportional to 20,385,748.64, 28,132,337.73 and 11,218,391.39 is: 15,481,382.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,385,748.64 : 28,132,337.73 = 11,218,391.39 : x
  2. Step 2: Convert to fraction form
    20,385,748.64/28,132,337.73 = 11,218,391.39/x
  3. Step 3: Cross multiply
    20,385,748.64x = 28,132,337.73 × 11,218,391.39
  4. Step 4: Simplify right side
    20,385,748.64x = 315,599,575,230,142.44
  5. Step 5: Solve for x
    x = 315,599,575,230,142.44/20,385,748.64
  6. Step 6: Final answer
    x = 15,481,382.65

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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.