Home / 20,626,845.36-28,463,380.20-11,925,578.72

Finding the Fourth Proportional to 20,626,845.36, 28,463,380.20 and 11,925,578.72

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Solution

The fourth proportional to 20,626,845.36, 28,463,380.20 and 11,925,578.72 is: 16,456,335.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,626,845.36 : 28,463,380.20 = 11,925,578.72 : x
  2. Step 2: Convert to fraction form
    20,626,845.36/28,463,380.20 = 11,925,578.72/x
  3. Step 3: Cross multiply
    20,626,845.36x = 28,463,380.20 × 11,925,578.72
  4. Step 4: Simplify right side
    20,626,845.36x = 339,442,281,070,072.44
  5. Step 5: Solve for x
    x = 339,442,281,070,072.44/20,626,845.36
  6. Step 6: Final answer
    x = 16,456,335.19

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1.5x scale

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.