Home / 20,340,616.41-28,053,809.03-13,378,441.33

Finding the Fourth Proportional to 20,340,616.41, 28,053,809.03 and 13,378,441.33

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Solution

The fourth proportional to 20,340,616.41, 28,053,809.03 and 13,378,441.33 is: 18,451,566.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,340,616.41 : 28,053,809.03 = 13,378,441.33 : x
  2. Step 2: Convert to fraction form
    20,340,616.41/28,053,809.03 = 13,378,441.33/x
  3. Step 3: Cross multiply
    20,340,616.41x = 28,053,809.03 × 13,378,441.33
  4. Step 4: Simplify right side
    20,340,616.41x = 375,316,238,190,879.25
  5. Step 5: Solve for x
    x = 375,316,238,190,879.25/20,340,616.41
  6. Step 6: Final answer
    x = 18,451,566.59

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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.