Home / 20,561,221.76-28,374,653.92-11,394,017.60

Finding the Fourth Proportional to 20,561,221.76, 28,374,653.92 and 11,394,017.60

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Solution

The fourth proportional to 20,561,221.76, 28,374,653.92 and 11,394,017.60 is: 15,723,837.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,561,221.76 : 28,374,653.92 = 11,394,017.60 : x
  2. Step 2: Convert to fraction form
    20,561,221.76/28,374,653.92 = 11,394,017.60/x
  3. Step 3: Cross multiply
    20,561,221.76x = 28,374,653.92 × 11,394,017.60
  4. Step 4: Simplify right side
    20,561,221.76x = 323,301,306,158,389
  5. Step 5: Solve for x
    x = 323,301,306,158,389/20,561,221.76
  6. Step 6: Final answer
    x = 15,723,837.33

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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.