Home / 15,486.10-21,372.62-9,198.47

Finding the Fourth Proportional to 15,486.10, 21,372.62 and 9,198.47

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Solution

The fourth proportional to 15,486.10, 21,372.62 and 9,198.47 is: 12,694.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,486.10 : 21,372.62 = 9,198.47 : x
  2. Step 2: Convert to fraction form
    15,486.10/21,372.62 = 9,198.47/x
  3. Step 3: Cross multiply
    15,486.10x = 21,372.62 × 9,198.47
  4. Step 4: Simplify right side
    15,486.10x = 196,595,403.89
  5. Step 5: Solve for x
    x = 196,595,403.89/15,486.10
  6. Step 6: Final answer
    x = 12,694.96

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.