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Finding the Fourth Proportional to 18,646.68, 27,960.90 and 11,531.64

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Solution

The fourth proportional to 18,646.68, 27,960.90 and 11,531.64 is: 17,291.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,646.68 : 27,960.90 = 11,531.64 : x
  2. Step 2: Convert to fraction form
    18,646.68/27,960.90 = 11,531.64/x
  3. Step 3: Cross multiply
    18,646.68x = 27,960.90 × 11,531.64
  4. Step 4: Simplify right side
    18,646.68x = 322,435,032.88
  5. Step 5: Solve for x
    x = 322,435,032.88/18,646.68
  6. Step 6: Final answer
    x = 17,291.82

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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.