Home / 20,386,691.12-28,133,625.39-11,219,333.78

Finding the Fourth Proportional to 20,386,691.12, 28,133,625.39 and 11,219,333.78

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Solution

The fourth proportional to 20,386,691.12, 28,133,625.39 and 11,219,333.78 is: 15,482,676.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,386,691.12 : 28,133,625.39 = 11,219,333.78 : x
  2. Step 2: Convert to fraction form
    20,386,691.12/28,133,625.39 = 11,219,333.78/x
  3. Step 3: Cross multiply
    20,386,691.12x = 28,133,625.39 × 11,219,333.78
  4. Step 4: Simplify right side
    20,386,691.12x = 315,640,533,691,892.69
  5. Step 5: Solve for x
    x = 315,640,533,691,892.69/20,386,691.12
  6. Step 6: Final answer
    x = 15,482,676.02

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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.