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Finding the Fourth Proportional to 12,394.50, 17,104.68 and 6,805.50

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Solution

The fourth proportional to 12,394.50, 17,104.68 and 6,805.50 is: 9,391.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,394.50 : 17,104.68 = 6,805.50 : x
  2. Step 2: Convert to fraction form
    12,394.50/17,104.68 = 6,805.50/x
  3. Step 3: Cross multiply
    12,394.50x = 17,104.68 × 6,805.50
  4. Step 4: Simplify right side
    12,394.50x = 116,405,899.74
  5. Step 5: Solve for x
    x = 116,405,899.74/12,394.50
  6. Step 6: Final answer
    x = 9,391.74

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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.