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Finding the Third Proportional to 6,990 and 15,354

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Solution

The third proportional to 6,990 and 15,354 is: 33,726.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,990 : 15,354 = 15,354 : x
  2. Step 2: Convert to fraction form
    6,990/15,354 = 15,354/x
  3. Step 3: Cross multiply
    6,990x = 15,354 × 15,354
  4. Step 4: Simplify right side
    6,990x = 235,745,316
  5. Step 5: Solve for x
    x = 235,745,316/6,990
  6. Step 6: Final answer
    x = 33,726.08

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.