Home / 12,115.14-18,174.30-4,216.80

Finding the Fourth Proportional to 12,115.14, 18,174.30 and 4,216.80

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Solution

The fourth proportional to 12,115.14, 18,174.30 and 4,216.80 is: 6,325.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,115.14 : 18,174.30 = 4,216.80 : x
  2. Step 2: Convert to fraction form
    12,115.14/18,174.30 = 4,216.80/x
  3. Step 3: Cross multiply
    12,115.14x = 18,174.30 × 4,216.80
  4. Step 4: Simplify right side
    12,115.14x = 76,637,388.24
  5. Step 5: Solve for x
    x = 76,637,388.24/12,115.14
  6. Step 6: Final answer
    x = 6,325.75

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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.