Home / 13,734.78-18,956.79-8,149.02

Finding the Fourth Proportional to 13,734.78, 18,956.79 and 8,149.02

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Solution

The fourth proportional to 13,734.78, 18,956.79 and 8,149.02 is: 11,247.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,734.78 : 18,956.79 = 8,149.02 : x
  2. Step 2: Convert to fraction form
    13,734.78/18,956.79 = 8,149.02/x
  3. Step 3: Cross multiply
    13,734.78x = 18,956.79 × 8,149.02
  4. Step 4: Simplify right side
    13,734.78x = 154,479,260.85
  5. Step 5: Solve for x
    x = 154,479,260.85/13,734.78
  6. Step 6: Final answer
    x = 11,247.31

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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.