Home / 16,865.20-25,322.10-12,734.20

Finding the Fourth Proportional to 16,865.20, 25,322.10 and 12,734.20

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Solution

The fourth proportional to 16,865.20, 25,322.10 and 12,734.20 is: 19,119.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,865.20 : 25,322.10 = 12,734.20 : x
  2. Step 2: Convert to fraction form
    16,865.20/25,322.10 = 12,734.20/x
  3. Step 3: Cross multiply
    16,865.20x = 25,322.10 × 12,734.20
  4. Step 4: Simplify right side
    16,865.20x = 322,456,685.82
  5. Step 5: Solve for x
    x = 322,456,685.82/16,865.20
  6. Step 6: Final answer
    x = 19,119.65

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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.