Home / 13,251.87-19,877.78-3,391.15

Finding the Fourth Proportional to 13,251.87, 19,877.78 and 3,391.15

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Solution

The fourth proportional to 13,251.87, 19,877.78 and 3,391.15 is: 5,086.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,251.87 : 19,877.78 = 3,391.15 : x
  2. Step 2: Convert to fraction form
    13,251.87/19,877.78 = 3,391.15/x
  3. Step 3: Cross multiply
    13,251.87x = 19,877.78 × 3,391.15
  4. Step 4: Simplify right side
    13,251.87x = 67,408,492.43
  5. Step 5: Solve for x
    x = 67,408,492.43/13,251.87
  6. Step 6: Final answer
    x = 5,086.72

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1.5x scale

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.