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Finding the Fourth Proportional to 12,503.73, 18,757.14 and 4,189.72

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Solution

The fourth proportional to 12,503.73, 18,757.14 and 4,189.72 is: 6,285.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,503.73 : 18,757.14 = 4,189.72 : x
  2. Step 2: Convert to fraction form
    12,503.73/18,757.14 = 4,189.72/x
  3. Step 3: Cross multiply
    12,503.73x = 18,757.14 × 4,189.72
  4. Step 4: Simplify right side
    12,503.73x = 78,587,164.60
  5. Step 5: Solve for x
    x = 78,587,164.60/12,503.73
  6. Step 6: Final answer
    x = 6,285.10

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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.