Home / 18,429.31-25,436.10-11,722.87

Finding the Fourth Proportional to 18,429.31, 25,436.10 and 11,722.87

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Solution

The fourth proportional to 18,429.31, 25,436.10 and 11,722.87 is: 16,179.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,429.31 : 25,436.10 = 11,722.87 : x
  2. Step 2: Convert to fraction form
    18,429.31/25,436.10 = 11,722.87/x
  3. Step 3: Cross multiply
    18,429.31x = 25,436.10 × 11,722.87
  4. Step 4: Simplify right side
    18,429.31x = 298,184,093.61
  5. Step 5: Solve for x
    x = 298,184,093.61/18,429.31
  6. Step 6: Final answer
    x = 16,179.88

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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.