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Finding the Fourth Proportional to 18,506.61, 27,715.77 and 10,691.73

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Solution

The fourth proportional to 18,506.61, 27,715.77 and 10,691.73 is: 16,012.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,506.61 : 27,715.77 = 10,691.73 : x
  2. Step 2: Convert to fraction form
    18,506.61/27,715.77 = 10,691.73/x
  3. Step 3: Cross multiply
    18,506.61x = 27,715.77 × 10,691.73
  4. Step 4: Simplify right side
    18,506.61x = 296,329,529.58
  5. Step 5: Solve for x
    x = 296,329,529.58/18,506.61
  6. Step 6: Final answer
    x = 16,012.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.