Home / 20,840,348.64-28,760,097.60-12,139,081.92

Finding the Fourth Proportional to 20,840,348.64, 28,760,097.60 and 12,139,081.92

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Solution

The fourth proportional to 20,840,348.64, 28,760,097.60 and 12,139,081.92 is: 16,752,175.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,840,348.64 : 28,760,097.60 = 12,139,081.92 : x
  2. Step 2: Convert to fraction form
    20,840,348.64/28,760,097.60 = 12,139,081.92/x
  3. Step 3: Cross multiply
    20,840,348.64x = 28,760,097.60 × 12,139,081.92
  4. Step 4: Simplify right side
    20,840,348.64x = 349,121,180,793,595.44
  5. Step 5: Solve for x
    x = 349,121,180,793,595.44/20,840,348.64
  6. Step 6: Final answer
    x = 16,752,175.64

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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.