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Finding the Fourth Proportional to 12,718.65, 17,553.54 and 7,054.66

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Solution

The fourth proportional to 12,718.65, 17,553.54 and 7,054.66 is: 9,736.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,718.65 : 17,553.54 = 7,054.66 : x
  2. Step 2: Convert to fraction form
    12,718.65/17,553.54 = 7,054.66/x
  3. Step 3: Cross multiply
    12,718.65x = 17,553.54 × 7,054.66
  4. Step 4: Simplify right side
    12,718.65x = 123,834,168.73
  5. Step 5: Solve for x
    x = 123,834,168.73/12,718.65
  6. Step 6: Final answer
    x = 9,736.42

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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.