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Finding the Fourth Proportional to 12,354.85, 17,049.73 and 6,689.67

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Solution

The fourth proportional to 12,354.85, 17,049.73 and 6,689.67 is: 9,231.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,354.85 : 17,049.73 = 6,689.67 : x
  2. Step 2: Convert to fraction form
    12,354.85/17,049.73 = 6,689.67/x
  3. Step 3: Cross multiply
    12,354.85x = 17,049.73 × 6,689.67
  4. Step 4: Simplify right side
    12,354.85x = 114,057,050.56
  5. Step 5: Solve for x
    x = 114,057,050.56/12,354.85
  6. Step 6: Final answer
    x = 9,231.77

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1.5x scale

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.