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Finding the Fourth Proportional to 18,419.12, 27,630.64 and 6,734.88

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Solution

The fourth proportional to 18,419.12, 27,630.64 and 6,734.88 is: 10,103.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,419.12 : 27,630.64 = 6,734.88 : x
  2. Step 2: Convert to fraction form
    18,419.12/27,630.64 = 6,734.88/x
  3. Step 3: Cross multiply
    18,419.12x = 27,630.64 × 6,734.88
  4. Step 4: Simplify right side
    18,419.12x = 186,089,044.72
  5. Step 5: Solve for x
    x = 186,089,044.72/18,419.12
  6. Step 6: Final answer
    x = 10,103.04

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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.