Home / 20,414,805.89-28,172,416.65-11,247,448.64

Finding the Fourth Proportional to 20,414,805.89, 28,172,416.65 and 11,247,448.64

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Solution

The fourth proportional to 20,414,805.89, 28,172,416.65 and 11,247,448.64 is: 15,521,470.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,414,805.89 : 28,172,416.65 = 11,247,448.64 : x
  2. Step 2: Convert to fraction form
    20,414,805.89/28,172,416.65 = 11,247,448.64/x
  3. Step 3: Cross multiply
    20,414,805.89x = 28,172,416.65 × 11,247,448.64
  4. Step 4: Simplify right side
    20,414,805.89x = 316,867,809,335,555.88
  5. Step 5: Solve for x
    x = 316,867,809,335,555.88/20,414,805.89
  6. Step 6: Final answer
    x = 15,521,470.60

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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.