Home / 26,439.12-39,659.76-8,910.72

Finding the Fourth Proportional to 26,439.12, 39,659.76 and 8,910.72

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Solution

The fourth proportional to 26,439.12, 39,659.76 and 8,910.72 is: 13,366.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,439.12 : 39,659.76 = 8,910.72 : x
  2. Step 2: Convert to fraction form
    26,439.12/39,659.76 = 8,910.72/x
  3. Step 3: Cross multiply
    26,439.12x = 39,659.76 × 8,910.72
  4. Step 4: Simplify right side
    26,439.12x = 353,397,016.63
  5. Step 5: Solve for x
    x = 353,397,016.63/26,439.12
  6. Step 6: Final answer
    x = 13,366.44

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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.