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Finding the Fourth Proportional to 18,808.34, 28,213.86 and 6,328.31

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Solution

The fourth proportional to 18,808.34, 28,213.86 and 6,328.31 is: 9,492.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,808.34 : 28,213.86 = 6,328.31 : x
  2. Step 2: Convert to fraction form
    18,808.34/28,213.86 = 6,328.31/x
  3. Step 3: Cross multiply
    18,808.34x = 28,213.86 × 6,328.31
  4. Step 4: Simplify right side
    18,808.34x = 178,546,052.38
  5. Step 5: Solve for x
    x = 178,546,052.38/18,808.34
  6. Step 6: Final answer
    x = 9,492.92

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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.