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Finding the Fourth Proportional to 18,922, 28,383.12 and 6,610

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Solution

The fourth proportional to 18,922, 28,383.12 and 6,610 is: 9,915.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,922 : 28,383.12 = 6,610 : x
  2. Step 2: Convert to fraction form
    18,922/28,383.12 = 6,610/x
  3. Step 3: Cross multiply
    18,922x = 28,383.12 × 6,610
  4. Step 4: Simplify right side
    18,922x = 187,612,423.20
  5. Step 5: Solve for x
    x = 187,612,423.20/18,922
  6. Step 6: Final answer
    x = 9,915.04

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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.