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Finding the Fourth Proportional to 12,838.66, 17,717.33 and 7,249.66

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Solution

The fourth proportional to 12,838.66, 17,717.33 and 7,249.66 is: 10,004.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,838.66 : 17,717.33 = 7,249.66 : x
  2. Step 2: Convert to fraction form
    12,838.66/17,717.33 = 7,249.66/x
  3. Step 3: Cross multiply
    12,838.66x = 17,717.33 × 7,249.66
  4. Step 4: Simplify right side
    12,838.66x = 128,444,592.44
  5. Step 5: Solve for x
    x = 128,444,592.44/12,838.66
  6. Step 6: Final answer
    x = 10,004.52

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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.