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Finding the Fourth Proportional to 18,891.68, 26,062.83 and 11,338.16

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Solution

The fourth proportional to 18,891.68, 26,062.83 and 11,338.16 is: 15,642.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,891.68 : 26,062.83 = 11,338.16 : x
  2. Step 2: Convert to fraction form
    18,891.68/26,062.83 = 11,338.16/x
  3. Step 3: Cross multiply
    18,891.68x = 26,062.83 × 11,338.16
  4. Step 4: Simplify right side
    18,891.68x = 295,504,406.28
  5. Step 5: Solve for x
    x = 295,504,406.28/18,891.68
  6. Step 6: Final answer
    x = 15,642.04

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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.