Home / 12,633.10-18,991.16-11,719.69

Finding the Fourth Proportional to 12,633.10, 18,991.16 and 11,719.69

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Solution

The fourth proportional to 12,633.10, 18,991.16 and 11,719.69 is: 17,618.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,633.10 : 18,991.16 = 11,719.69 : x
  2. Step 2: Convert to fraction form
    12,633.10/18,991.16 = 11,719.69/x
  3. Step 3: Cross multiply
    12,633.10x = 18,991.16 × 11,719.69
  4. Step 4: Simplify right side
    12,633.10x = 222,570,445.81
  5. Step 5: Solve for x
    x = 222,570,445.81/12,633.10
  6. Step 6: Final answer
    x = 17,618.04

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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.