Home / 12,654.93-18,979.11-3,768.18

Finding the Fourth Proportional to 12,654.93, 18,979.11 and 3,768.18

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Solution

The fourth proportional to 12,654.93, 18,979.11 and 3,768.18 is: 5,651.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,654.93 : 18,979.11 = 3,768.18 : x
  2. Step 2: Convert to fraction form
    12,654.93/18,979.11 = 3,768.18/x
  3. Step 3: Cross multiply
    12,654.93x = 18,979.11 × 3,768.18
  4. Step 4: Simplify right side
    12,654.93x = 71,516,702.72
  5. Step 5: Solve for x
    x = 71,516,702.72/12,654.93
  6. Step 6: Final answer
    x = 5,651.29

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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.