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Finding the Fourth Proportional to 12,504.87, 17,256.42 and 6,839.66

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Solution

The fourth proportional to 12,504.87, 17,256.42 and 6,839.66 is: 9,438.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,504.87 : 17,256.42 = 6,839.66 : x
  2. Step 2: Convert to fraction form
    12,504.87/17,256.42 = 6,839.66/x
  3. Step 3: Cross multiply
    12,504.87x = 17,256.42 × 6,839.66
  4. Step 4: Simplify right side
    12,504.87x = 118,027,959.34
  5. Step 5: Solve for x
    x = 118,027,959.34/12,504.87
  6. Step 6: Final answer
    x = 9,438.56

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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.