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Finding the Fourth Proportional to 18,658.82, 27,988.07 and 7,562.87

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Solution

The fourth proportional to 18,658.82, 27,988.07 and 7,562.87 is: 11,344.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,658.82 : 27,988.07 = 7,562.87 : x
  2. Step 2: Convert to fraction form
    18,658.82/27,988.07 = 7,562.87/x
  3. Step 3: Cross multiply
    18,658.82x = 27,988.07 × 7,562.87
  4. Step 4: Simplify right side
    18,658.82x = 211,670,062.16
  5. Step 5: Solve for x
    x = 211,670,062.16/18,658.82
  6. Step 6: Final answer
    x = 11,344.23

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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.