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Finding the Fourth Proportional to 17,920.98, 26,886.94 and 9,162.05

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Solution

The fourth proportional to 17,920.98, 26,886.94 and 9,162.05 is: 13,745.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,920.98 : 26,886.94 = 9,162.05 : x
  2. Step 2: Convert to fraction form
    17,920.98/26,886.94 = 9,162.05/x
  3. Step 3: Cross multiply
    17,920.98x = 26,886.94 × 9,162.05
  4. Step 4: Simplify right side
    17,920.98x = 246,339,331.29
  5. Step 5: Solve for x
    x = 246,339,331.29/17,920.98
  6. Step 6: Final answer
    x = 13,745.86

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1.5x scale

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.