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Finding the Fourth Proportional to 18,906, 28,352.97 and 6,253.41

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Solution

The fourth proportional to 18,906, 28,352.97 and 6,253.41 is: 9,378.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,906 : 28,352.97 = 6,253.41 : x
  2. Step 2: Convert to fraction form
    18,906/28,352.97 = 6,253.41/x
  3. Step 3: Cross multiply
    18,906x = 28,352.97 × 6,253.41
  4. Step 4: Simplify right side
    18,906x = 177,302,746.13
  5. Step 5: Solve for x
    x = 177,302,746.13/18,906
  6. Step 6: Final answer
    x = 9,378.12

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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.