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Finding the Fourth Proportional to 18,694.68, 28,052.36 and 9,929.27

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Solution

The fourth proportional to 18,694.68, 28,052.36 and 9,929.27 is: 14,899.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,694.68 : 28,052.36 = 9,929.27 : x
  2. Step 2: Convert to fraction form
    18,694.68/28,052.36 = 9,929.27/x
  3. Step 3: Cross multiply
    18,694.68x = 28,052.36 × 9,929.27
  4. Step 4: Simplify right side
    18,694.68x = 278,539,266.67
  5. Step 5: Solve for x
    x = 278,539,266.67/18,694.68
  6. Step 6: Final answer
    x = 14,899.39

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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.