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Finding the Fourth Proportional to 12,239.54, 16,889.97 and 6,934.38

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Solution

The fourth proportional to 12,239.54, 16,889.97 and 6,934.38 is: 9,569.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,239.54 : 16,889.97 = 6,934.38 : x
  2. Step 2: Convert to fraction form
    12,239.54/16,889.97 = 6,934.38/x
  3. Step 3: Cross multiply
    12,239.54x = 16,889.97 × 6,934.38
  4. Step 4: Simplify right side
    12,239.54x = 117,121,470.17
  5. Step 5: Solve for x
    x = 117,121,470.17/12,239.54
  6. Step 6: Final answer
    x = 9,569.11

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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.