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Finding the Fourth Proportional to 18,686, 28,029.16 and 4,834.16

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Solution

The fourth proportional to 18,686, 28,029.16 and 4,834.16 is: 7,251.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,686 : 28,029.16 = 4,834.16 : x
  2. Step 2: Convert to fraction form
    18,686/28,029.16 = 4,834.16/x
  3. Step 3: Cross multiply
    18,686x = 28,029.16 × 4,834.16
  4. Step 4: Simplify right side
    18,686x = 135,497,444.11
  5. Step 5: Solve for x
    x = 135,497,444.11/18,686
  6. Step 6: Final answer
    x = 7,251.28

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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.