Home / 18,872.40-25,998.92-13,196.54

Finding the Fourth Proportional to 18,872.40, 25,998.92 and 13,196.54

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Solution

The fourth proportional to 18,872.40, 25,998.92 and 13,196.54 is: 18,179.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,872.40 : 25,998.92 = 13,196.54 : x
  2. Step 2: Convert to fraction form
    18,872.40/25,998.92 = 13,196.54/x
  3. Step 3: Cross multiply
    18,872.40x = 25,998.92 × 13,196.54
  4. Step 4: Simplify right side
    18,872.40x = 343,095,591.76
  5. Step 5: Solve for x
    x = 343,095,591.76/18,872.40
  6. Step 6: Final answer
    x = 18,179.75

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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.