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Finding the Fourth Proportional to 18,576.21, 27,866.75 and 9,811.47

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Solution

The fourth proportional to 18,576.21, 27,866.75 and 9,811.47 is: 14,718.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,576.21 : 27,866.75 = 9,811.47 : x
  2. Step 2: Convert to fraction form
    18,576.21/27,866.75 = 9,811.47/x
  3. Step 3: Cross multiply
    18,576.21x = 27,866.75 × 9,811.47
  4. Step 4: Simplify right side
    18,576.21x = 273,413,781.62
  5. Step 5: Solve for x
    x = 273,413,781.62/18,576.21
  6. Step 6: Final answer
    x = 14,718.49

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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.