Home / 12,439.82-17,166.88-6,774.42

Finding the Fourth Proportional to 12,439.82, 17,166.88 and 6,774.42

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Solution

The fourth proportional to 12,439.82, 17,166.88 and 6,774.42 is: 9,348.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,439.82 : 17,166.88 = 6,774.42 : x
  2. Step 2: Convert to fraction form
    12,439.82/17,166.88 = 6,774.42/x
  3. Step 3: Cross multiply
    12,439.82x = 17,166.88 × 6,774.42
  4. Step 4: Simplify right side
    12,439.82x = 116,295,655.21
  5. Step 5: Solve for x
    x = 116,295,655.21/12,439.82
  6. Step 6: Final answer
    x = 9,348.66

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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.