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Finding the Fourth Proportional to 17,778.78, 26,684.43 and 9,019.74

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Solution

The fourth proportional to 17,778.78, 26,684.43 and 9,019.74 is: 13,537.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,778.78 : 26,684.43 = 9,019.74 : x
  2. Step 2: Convert to fraction form
    17,778.78/26,684.43 = 9,019.74/x
  3. Step 3: Cross multiply
    17,778.78x = 26,684.43 × 9,019.74
  4. Step 4: Simplify right side
    17,778.78x = 240,686,620.65
  5. Step 5: Solve for x
    x = 240,686,620.65/17,778.78
  6. Step 6: Final answer
    x = 13,537.86

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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.