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Finding the Fourth Proportional to 12,388.67, 17,096.53 and 6,723.49

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Solution

The fourth proportional to 12,388.67, 17,096.53 and 6,723.49 is: 9,278.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,388.67 : 17,096.53 = 6,723.49 : x
  2. Step 2: Convert to fraction form
    12,388.67/17,096.53 = 6,723.49/x
  3. Step 3: Cross multiply
    12,388.67x = 17,096.53 × 6,723.49
  4. Step 4: Simplify right side
    12,388.67x = 114,948,306.99
  5. Step 5: Solve for x
    x = 114,948,306.99/12,388.67
  6. Step 6: Final answer
    x = 9,278.50

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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.