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Finding the Fourth Proportional to 18,008.40, 26,980.20 and 11,074.80

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Solution

The fourth proportional to 18,008.40, 26,980.20 and 11,074.80 is: 16,592.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,008.40 : 26,980.20 = 11,074.80 : x
  2. Step 2: Convert to fraction form
    18,008.40/26,980.20 = 11,074.80/x
  3. Step 3: Cross multiply
    18,008.40x = 26,980.20 × 11,074.80
  4. Step 4: Simplify right side
    18,008.40x = 298,800,318.96
  5. Step 5: Solve for x
    x = 298,800,318.96/18,008.40
  6. Step 6: Final answer
    x = 16,592.27

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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.