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Finding the Fourth Proportional to 18,008.20, 27,012.30 and 16,856.20

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Solution

The fourth proportional to 18,008.20, 27,012.30 and 16,856.20 is: 25,284.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,008.20 : 27,012.30 = 16,856.20 : x
  2. Step 2: Convert to fraction form
    18,008.20/27,012.30 = 16,856.20/x
  3. Step 3: Cross multiply
    18,008.20x = 27,012.30 × 16,856.20
  4. Step 4: Simplify right side
    18,008.20x = 455,324,731.26
  5. Step 5: Solve for x
    x = 455,324,731.26/18,008.20
  6. Step 6: Final answer
    x = 25,284.30

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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.