Home / 18,944.12-26,143-10,991.08

Finding the Fourth Proportional to 18,944.12, 26,143 and 10,991.08

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Solution

The fourth proportional to 18,944.12, 26,143 and 10,991.08 is: 15,167.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,944.12 : 26,143 = 10,991.08 : x
  2. Step 2: Convert to fraction form
    18,944.12/26,143 = 10,991.08/x
  3. Step 3: Cross multiply
    18,944.12x = 26,143 × 10,991.08
  4. Step 4: Simplify right side
    18,944.12x = 287,339,804.44
  5. Step 5: Solve for x
    x = 287,339,804.44/18,944.12
  6. Step 6: Final answer
    x = 15,167.76

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1.5x scale

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.