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Finding the Fourth Proportional to 18,736.44, 28,102.80 and 4,885.44

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Solution

The fourth proportional to 18,736.44, 28,102.80 and 4,885.44 is: 7,327.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,736.44 : 28,102.80 = 4,885.44 : x
  2. Step 2: Convert to fraction form
    18,736.44/28,102.80 = 4,885.44/x
  3. Step 3: Cross multiply
    18,736.44x = 28,102.80 × 4,885.44
  4. Step 4: Simplify right side
    18,736.44x = 137,294,543.23
  5. Step 5: Solve for x
    x = 137,294,543.23/18,736.44
  6. Step 6: Final answer
    x = 7,327.68

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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.