Home / 26,155.20-39,162.96-13,817.28

Finding the Fourth Proportional to 26,155.20, 39,162.96 and 13,817.28

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Solution

The fourth proportional to 26,155.20, 39,162.96 and 13,817.28 is: 20,689.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,155.20 : 39,162.96 = 13,817.28 : x
  2. Step 2: Convert to fraction form
    26,155.20/39,162.96 = 13,817.28/x
  3. Step 3: Cross multiply
    26,155.20x = 39,162.96 × 13,817.28
  4. Step 4: Simplify right side
    26,155.20x = 541,125,583.95
  5. Step 5: Solve for x
    x = 541,125,583.95/26,155.20
  6. Step 6: Final answer
    x = 20,689.02

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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.