Home / 13,836.52-20,761.26-8,639.56

Finding the Fourth Proportional to 13,836.52, 20,761.26 and 8,639.56

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Solution

The fourth proportional to 13,836.52, 20,761.26 and 8,639.56 is: 12,963.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,836.52 : 20,761.26 = 8,639.56 : x
  2. Step 2: Convert to fraction form
    13,836.52/20,761.26 = 8,639.56/x
  3. Step 3: Cross multiply
    13,836.52x = 20,761.26 × 8,639.56
  4. Step 4: Simplify right side
    13,836.52x = 179,368,151.45
  5. Step 5: Solve for x
    x = 179,368,151.45/13,836.52
  6. Step 6: Final answer
    x = 12,963.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.