Home / 20,561,221.68-28,374,653.92-11,394,017.52

Finding the Fourth Proportional to 20,561,221.68, 28,374,653.92 and 11,394,017.52

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Solution

The fourth proportional to 20,561,221.68, 28,374,653.92 and 11,394,017.52 is: 15,723,837.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,561,221.68 : 28,374,653.92 = 11,394,017.52 : x
  2. Step 2: Convert to fraction form
    20,561,221.68/28,374,653.92 = 11,394,017.52/x
  3. Step 3: Cross multiply
    20,561,221.68x = 28,374,653.92 × 11,394,017.52
  4. Step 4: Simplify right side
    20,561,221.68x = 323,301,303,888,416.69
  5. Step 5: Solve for x
    x = 323,301,303,888,416.69/20,561,221.68
  6. Step 6: Final answer
    x = 15,723,837.28

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1.5x scale

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.