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Finding the Fourth Proportional to 18,674.22, 28,020.30 and 11,652.42

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Solution

The fourth proportional to 18,674.22, 28,020.30 and 11,652.42 is: 17,484.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,674.22 : 28,020.30 = 11,652.42 : x
  2. Step 2: Convert to fraction form
    18,674.22/28,020.30 = 11,652.42/x
  3. Step 3: Cross multiply
    18,674.22x = 28,020.30 × 11,652.42
  4. Step 4: Simplify right side
    18,674.22x = 326,504,304.13
  5. Step 5: Solve for x
    x = 326,504,304.13/18,674.22
  6. Step 6: Final answer
    x = 17,484.23

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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.