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Finding the Fourth Proportional to 15,892.08, 21,930.09 and 8,818.97

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Solution

The fourth proportional to 15,892.08, 21,930.09 and 8,818.97 is: 12,169.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,892.08 : 21,930.09 = 8,818.97 : x
  2. Step 2: Convert to fraction form
    15,892.08/21,930.09 = 8,818.97/x
  3. Step 3: Cross multiply
    15,892.08x = 21,930.09 × 8,818.97
  4. Step 4: Simplify right side
    15,892.08x = 193,400,696.16
  5. Step 5: Solve for x
    x = 193,400,696.16/15,892.08
  6. Step 6: Final answer
    x = 12,169.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.