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Finding the Fourth Proportional to 18,891.92, 26,071.20 and 10,394.36

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Solution

The fourth proportional to 18,891.92, 26,071.20 and 10,394.36 is: 14,344.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,891.92 : 26,071.20 = 10,394.36 : x
  2. Step 2: Convert to fraction form
    18,891.92/26,071.20 = 10,394.36/x
  3. Step 3: Cross multiply
    18,891.92x = 26,071.20 × 10,394.36
  4. Step 4: Simplify right side
    18,891.92x = 270,993,438.43
  5. Step 5: Solve for x
    x = 270,993,438.43/18,891.92
  6. Step 6: Final answer
    x = 14,344.41

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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.