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Finding the Fourth Proportional to 12,691.88, 17,483.49 and 10,797.39

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Solution

The fourth proportional to 12,691.88, 17,483.49 and 10,797.39 is: 14,873.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,691.88 : 17,483.49 = 10,797.39 : x
  2. Step 2: Convert to fraction form
    12,691.88/17,483.49 = 10,797.39/x
  3. Step 3: Cross multiply
    12,691.88x = 17,483.49 × 10,797.39
  4. Step 4: Simplify right side
    12,691.88x = 188,776,060.09
  5. Step 5: Solve for x
    x = 188,776,060.09/12,691.88
  6. Step 6: Final answer
    x = 14,873.77

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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.