Home / 20,674.86-28,531.11-11,243.50

Finding the Fourth Proportional to 20,674.86, 28,531.11 and 11,243.50

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Solution

The fourth proportional to 20,674.86, 28,531.11 and 11,243.50 is: 15,515.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,674.86 : 28,531.11 = 11,243.50 : x
  2. Step 2: Convert to fraction form
    20,674.86/28,531.11 = 11,243.50/x
  3. Step 3: Cross multiply
    20,674.86x = 28,531.11 × 11,243.50
  4. Step 4: Simplify right side
    20,674.86x = 320,789,535.29
  5. Step 5: Solve for x
    x = 320,789,535.29/20,674.86
  6. Step 6: Final answer
    x = 15,515.92

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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.