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Finding the Fourth Proportional to 18,735.89, 28,101 and 7,046.38

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Solution

The fourth proportional to 18,735.89, 28,101 and 7,046.38 is: 10,568.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,735.89 : 28,101 = 7,046.38 : x
  2. Step 2: Convert to fraction form
    18,735.89/28,101 = 7,046.38/x
  3. Step 3: Cross multiply
    18,735.89x = 28,101 × 7,046.38
  4. Step 4: Simplify right side
    18,735.89x = 198,010,324.38
  5. Step 5: Solve for x
    x = 198,010,324.38/18,735.89
  6. Step 6: Final answer
    x = 10,568.50

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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.