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Finding the Fourth Proportional to 21,906.56, 32,859.72 and 8,055.68

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Solution

The fourth proportional to 21,906.56, 32,859.72 and 8,055.68 is: 12,083.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,906.56 : 32,859.72 = 8,055.68 : x
  2. Step 2: Convert to fraction form
    21,906.56/32,859.72 = 8,055.68/x
  3. Step 3: Cross multiply
    21,906.56x = 32,859.72 × 8,055.68
  4. Step 4: Simplify right side
    21,906.56x = 264,707,389.21
  5. Step 5: Solve for x
    x = 264,707,389.21/21,906.56
  6. Step 6: Final answer
    x = 12,083.48

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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.