Home / 18,991.26-26,186.60-12,268.02

Finding the Fourth Proportional to 18,991.26, 26,186.60 and 12,268.02

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Solution

The fourth proportional to 18,991.26, 26,186.60 and 12,268.02 is: 16,916.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,991.26 : 26,186.60 = 12,268.02 : x
  2. Step 2: Convert to fraction form
    18,991.26/26,186.60 = 12,268.02/x
  3. Step 3: Cross multiply
    18,991.26x = 26,186.60 × 12,268.02
  4. Step 4: Simplify right side
    18,991.26x = 321,257,732.53
  5. Step 5: Solve for x
    x = 321,257,732.53/18,991.26
  6. Step 6: Final answer
    x = 16,916.08

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.