Home / 20,729.07-28,606.89-11,778.09

Finding the Fourth Proportional to 20,729.07, 28,606.89 and 11,778.09

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Solution

The fourth proportional to 20,729.07, 28,606.89 and 11,778.09 is: 16,254.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,729.07 : 28,606.89 = 11,778.09 : x
  2. Step 2: Convert to fraction form
    20,729.07/28,606.89 = 11,778.09/x
  3. Step 3: Cross multiply
    20,729.07x = 28,606.89 × 11,778.09
  4. Step 4: Simplify right side
    20,729.07x = 336,934,523.47
  5. Step 5: Solve for x
    x = 336,934,523.47/20,729.07
  6. Step 6: Final answer
    x = 16,254.20

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.