Home / 20,654.56-30,979.18-6,613.40

Finding the Fourth Proportional to 20,654.56, 30,979.18 and 6,613.40

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Solution

The fourth proportional to 20,654.56, 30,979.18 and 6,613.40 is: 9,919.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,654.56 : 30,979.18 = 6,613.40 : x
  2. Step 2: Convert to fraction form
    20,654.56/30,979.18 = 6,613.40/x
  3. Step 3: Cross multiply
    20,654.56x = 30,979.18 × 6,613.40
  4. Step 4: Simplify right side
    20,654.56x = 204,877,709.01
  5. Step 5: Solve for x
    x = 204,877,709.01/20,654.56
  6. Step 6: Final answer
    x = 9,919.25

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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.