Home / 26,186.89-39,286.49-8,656.72

Finding the Fourth Proportional to 26,186.89, 39,286.49 and 8,656.72

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Solution

The fourth proportional to 26,186.89, 39,286.49 and 8,656.72 is: 12,987.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,186.89 : 39,286.49 = 8,656.72 : x
  2. Step 2: Convert to fraction form
    26,186.89/39,286.49 = 8,656.72/x
  3. Step 3: Cross multiply
    26,186.89x = 39,286.49 × 8,656.72
  4. Step 4: Simplify right side
    26,186.89x = 340,092,143.71
  5. Step 5: Solve for x
    x = 340,092,143.71/26,186.89
  6. Step 6: Final answer
    x = 12,987.11

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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.