Home / 20,605,171.08-28,435,935.79-11,313,132.81

Finding the Fourth Proportional to 20,605,171.08, 28,435,935.79 and 11,313,132.81

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Solution

The fourth proportional to 20,605,171.08, 28,435,935.79 and 11,313,132.81 is: 15,612,562.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,605,171.08 : 28,435,935.79 = 11,313,132.81 : x
  2. Step 2: Convert to fraction form
    20,605,171.08/28,435,935.79 = 11,313,132.81/x
  3. Step 3: Cross multiply
    20,605,171.08x = 28,435,935.79 × 11,313,132.81
  4. Step 4: Simplify right side
    20,605,171.08x = 321,699,518,012,772.56
  5. Step 5: Solve for x
    x = 321,699,518,012,772.56/20,605,171.08
  6. Step 6: Final answer
    x = 15,612,562.34

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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.