Home / 28,639.68-42,910.92-13,855.56

Finding the Fourth Proportional to 28,639.68, 42,910.92 and 13,855.56

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Solution

The fourth proportional to 28,639.68, 42,910.92 and 13,855.56 is: 20,759.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,639.68 : 42,910.92 = 13,855.56 : x
  2. Step 2: Convert to fraction form
    28,639.68/42,910.92 = 13,855.56/x
  3. Step 3: Cross multiply
    28,639.68x = 42,910.92 × 13,855.56
  4. Step 4: Simplify right side
    28,639.68x = 594,554,826.72
  5. Step 5: Solve for x
    x = 594,554,826.72/28,639.68
  6. Step 6: Final answer
    x = 20,759.83

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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.