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Finding the Fourth Proportional to 19,222.66, 28,837.89 and 8,129.32

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Solution

The fourth proportional to 19,222.66, 28,837.89 and 8,129.32 is: 12,195.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,222.66 : 28,837.89 = 8,129.32 : x
  2. Step 2: Convert to fraction form
    19,222.66/28,837.89 = 8,129.32/x
  3. Step 3: Cross multiply
    19,222.66x = 28,837.89 × 8,129.32
  4. Step 4: Simplify right side
    19,222.66x = 234,432,435.93
  5. Step 5: Solve for x
    x = 234,432,435.93/19,222.66
  6. Step 6: Final answer
    x = 12,195.63

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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.