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Finding the Fourth Proportional to 12,388.74, 17,096.47 and 6,723.49

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Solution

The fourth proportional to 12,388.74, 17,096.47 and 6,723.49 is: 9,278.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,388.74 : 17,096.47 = 6,723.49 : x
  2. Step 2: Convert to fraction form
    12,388.74/17,096.47 = 6,723.49/x
  3. Step 3: Cross multiply
    12,388.74x = 17,096.47 × 6,723.49
  4. Step 4: Simplify right side
    12,388.74x = 114,947,955.41
  5. Step 5: Solve for x
    x = 114,947,955.41/12,388.74
  6. Step 6: Final answer
    x = 9,278.42

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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.