Home / 18,137.88-27,215.19-8,280.18

Finding the Fourth Proportional to 18,137.88, 27,215.19 and 8,280.18

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Solution

The fourth proportional to 18,137.88, 27,215.19 and 8,280.18 is: 12,424.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,137.88 : 27,215.19 = 8,280.18 : x
  2. Step 2: Convert to fraction form
    18,137.88/27,215.19 = 8,280.18/x
  3. Step 3: Cross multiply
    18,137.88x = 27,215.19 × 8,280.18
  4. Step 4: Simplify right side
    18,137.88x = 225,346,671.93
  5. Step 5: Solve for x
    x = 225,346,671.93/18,137.88
  6. Step 6: Final answer
    x = 12,424.09

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Double scale
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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.