Home / 20,728,039.08-28,604,732.10-11,561,272.68

Finding the Fourth Proportional to 20,728,039.08, 28,604,732.10 and 11,561,272.68

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Solution

The fourth proportional to 20,728,039.08, 28,604,732.10 and 11,561,272.68 is: 15,954,577.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,728,039.08 : 28,604,732.10 = 11,561,272.68 : x
  2. Step 2: Convert to fraction form
    20,728,039.08/28,604,732.10 = 11,561,272.68/x
  3. Step 3: Cross multiply
    20,728,039.08x = 28,604,732.10 × 11,561,272.68
  4. Step 4: Simplify right side
    20,728,039.08x = 330,707,107,746,449.06
  5. Step 5: Solve for x
    x = 330,707,107,746,449.06/20,728,039.08
  6. Step 6: Final answer
    x = 15,954,577.59

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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.