Home / 25,867.84-38,811.10-12,729.44

Finding the Fourth Proportional to 25,867.84, 38,811.10 and 12,729.44

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Solution

The fourth proportional to 25,867.84, 38,811.10 and 12,729.44 is: 19,098.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,867.84 : 38,811.10 = 12,729.44 : x
  2. Step 2: Convert to fraction form
    25,867.84/38,811.10 = 12,729.44/x
  3. Step 3: Cross multiply
    25,867.84x = 38,811.10 × 12,729.44
  4. Step 4: Simplify right side
    25,867.84x = 494,043,568.78
  5. Step 5: Solve for x
    x = 494,043,568.78/25,867.84
  6. Step 6: Final answer
    x = 19,098.76

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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.