Home / 12,148.14-18,222.21-8,758.29

Finding the Fourth Proportional to 12,148.14, 18,222.21 and 8,758.29

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Solution

The fourth proportional to 12,148.14, 18,222.21 and 8,758.29 is: 13,137.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,148.14 : 18,222.21 = 8,758.29 : x
  2. Step 2: Convert to fraction form
    12,148.14/18,222.21 = 8,758.29/x
  3. Step 3: Cross multiply
    12,148.14x = 18,222.21 × 8,758.29
  4. Step 4: Simplify right side
    12,148.14x = 159,595,399.62
  5. Step 5: Solve for x
    x = 159,595,399.62/12,148.14
  6. Step 6: Final answer
    x = 13,137.44

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Half scale
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Double scale
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Similar ratio
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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.