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Finding the Fourth Proportional to 21,657.78, 32,494.98 and 7,619.27

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Solution

The fourth proportional to 21,657.78, 32,494.98 and 7,619.27 is: 11,431.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,657.78 : 32,494.98 = 7,619.27 : x
  2. Step 2: Convert to fraction form
    21,657.78/32,494.98 = 7,619.27/x
  3. Step 3: Cross multiply
    21,657.78x = 32,494.98 × 7,619.27
  4. Step 4: Simplify right side
    21,657.78x = 247,587,863.79
  5. Step 5: Solve for x
    x = 247,587,863.79/21,657.78
  6. Step 6: Final answer
    x = 11,431.82

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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.