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Finding the Fourth Proportional to 12,897.27, 17,799.08 and 7,521.71

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Solution

The fourth proportional to 12,897.27, 17,799.08 and 7,521.71 is: 10,380.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,897.27 : 17,799.08 = 7,521.71 : x
  2. Step 2: Convert to fraction form
    12,897.27/17,799.08 = 7,521.71/x
  3. Step 3: Cross multiply
    12,897.27x = 17,799.08 × 7,521.71
  4. Step 4: Simplify right side
    12,897.27x = 133,879,391.42
  5. Step 5: Solve for x
    x = 133,879,391.42/12,897.27
  6. Step 6: Final answer
    x = 10,380.44

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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.