Home / 12,181.28-18,272.60-3,416.87

Finding the Fourth Proportional to 12,181.28, 18,272.60 and 3,416.87

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Solution

The fourth proportional to 12,181.28, 18,272.60 and 3,416.87 is: 5,125.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,181.28 : 18,272.60 = 3,416.87 : x
  2. Step 2: Convert to fraction form
    12,181.28/18,272.60 = 3,416.87/x
  3. Step 3: Cross multiply
    12,181.28x = 18,272.60 × 3,416.87
  4. Step 4: Simplify right side
    12,181.28x = 62,435,081.68
  5. Step 5: Solve for x
    x = 62,435,081.68/12,181.28
  6. Step 6: Final answer
    x = 5,125.49

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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.