Home / 18,800.96-25,936.11-15,815.70

Finding the Fourth Proportional to 18,800.96, 25,936.11 and 15,815.70

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Solution

The fourth proportional to 18,800.96, 25,936.11 and 15,815.70 is: 21,817.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,800.96 : 25,936.11 = 15,815.70 : x
  2. Step 2: Convert to fraction form
    18,800.96/25,936.11 = 15,815.70/x
  3. Step 3: Cross multiply
    18,800.96x = 25,936.11 × 15,815.70
  4. Step 4: Simplify right side
    18,800.96x = 410,197,734.93
  5. Step 5: Solve for x
    x = 410,197,734.93/18,800.96
  6. Step 6: Final answer
    x = 21,817.92

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1.5x scale

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.