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Finding the Fourth Proportional to 12,696.93, 17,521.80 and 7,107.93

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Solution

The fourth proportional to 12,696.93, 17,521.80 and 7,107.93 is: 9,808.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,696.93 : 17,521.80 = 7,107.93 : x
  2. Step 2: Convert to fraction form
    12,696.93/17,521.80 = 7,107.93/x
  3. Step 3: Cross multiply
    12,696.93x = 17,521.80 × 7,107.93
  4. Step 4: Simplify right side
    12,696.93x = 124,543,727.87
  5. Step 5: Solve for x
    x = 124,543,727.87/12,696.93
  6. Step 6: Final answer
    x = 9,808.96

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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.