Home / 12,181.19-18,272.48-3,416.78

Finding the Fourth Proportional to 12,181.19, 18,272.48 and 3,416.78

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Solution

The fourth proportional to 12,181.19, 18,272.48 and 3,416.78 is: 5,125.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,181.19 : 18,272.48 = 3,416.78 : x
  2. Step 2: Convert to fraction form
    12,181.19/18,272.48 = 3,416.78/x
  3. Step 3: Cross multiply
    12,181.19x = 18,272.48 × 3,416.78
  4. Step 4: Simplify right side
    12,181.19x = 62,432,935.77
  5. Step 5: Solve for x
    x = 62,432,935.77/12,181.19
  6. Step 6: Final answer
    x = 5,125.36

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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.