Home / 20,588,097.56-28,388,277.06-13,135,785.72

Finding the Fourth Proportional to 20,588,097.56, 28,388,277.06 and 13,135,785.72

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Solution

The fourth proportional to 20,588,097.56, 28,388,277.06 and 13,135,785.72 is: 18,112,519.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,588,097.56 : 28,388,277.06 = 13,135,785.72 : x
  2. Step 2: Convert to fraction form
    20,588,097.56/28,388,277.06 = 13,135,785.72/x
  3. Step 3: Cross multiply
    20,588,097.56x = 28,388,277.06 × 13,135,785.72
  4. Step 4: Simplify right side
    20,588,097.56x = 372,902,324,420,151.56
  5. Step 5: Solve for x
    x = 372,902,324,420,151.56/20,588,097.56
  6. Step 6: Final answer
    x = 18,112,519.79

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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.