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Finding the Fourth Proportional to 18,652.88, 27,979.32 and 6,169.55

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Solution

The fourth proportional to 18,652.88, 27,979.32 and 6,169.55 is: 9,254.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,652.88 : 27,979.32 = 6,169.55 : x
  2. Step 2: Convert to fraction form
    18,652.88/27,979.32 = 6,169.55/x
  3. Step 3: Cross multiply
    18,652.88x = 27,979.32 × 6,169.55
  4. Step 4: Simplify right side
    18,652.88x = 172,619,813.71
  5. Step 5: Solve for x
    x = 172,619,813.71/18,652.88
  6. Step 6: Final answer
    x = 9,254.33

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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.