Home / 18,105.39-27,165.59-9,775.61

Finding the Fourth Proportional to 18,105.39, 27,165.59 and 9,775.61

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Solution

The fourth proportional to 18,105.39, 27,165.59 and 9,775.61 is: 14,667.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,105.39 : 27,165.59 = 9,775.61 : x
  2. Step 2: Convert to fraction form
    18,105.39/27,165.59 = 9,775.61/x
  3. Step 3: Cross multiply
    18,105.39x = 27,165.59 × 9,775.61
  4. Step 4: Simplify right side
    18,105.39x = 265,560,232.30
  5. Step 5: Solve for x
    x = 265,560,232.30/18,105.39
  6. Step 6: Final answer
    x = 14,667.47

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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.