Home / 20,505.25-28,295.22-11,554.35

Finding the Fourth Proportional to 20,505.25, 28,295.22 and 11,554.35

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Solution

The fourth proportional to 20,505.25, 28,295.22 and 11,554.35 is: 15,943.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,505.25 : 28,295.22 = 11,554.35 : x
  2. Step 2: Convert to fraction form
    20,505.25/28,295.22 = 11,554.35/x
  3. Step 3: Cross multiply
    20,505.25x = 28,295.22 × 11,554.35
  4. Step 4: Simplify right side
    20,505.25x = 326,932,812.43
  5. Step 5: Solve for x
    x = 326,932,812.43/20,505.25
  6. Step 6: Final answer
    x = 15,943.86

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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.