Home / 20,308.56-30,467.64-6,457.56

Finding the Fourth Proportional to 20,308.56, 30,467.64 and 6,457.56

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Solution

The fourth proportional to 20,308.56, 30,467.64 and 6,457.56 is: 9,687.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,308.56 : 30,467.64 = 6,457.56 : x
  2. Step 2: Convert to fraction form
    20,308.56/30,467.64 = 6,457.56/x
  3. Step 3: Cross multiply
    20,308.56x = 30,467.64 × 6,457.56
  4. Step 4: Simplify right side
    20,308.56x = 196,746,613.36
  5. Step 5: Solve for x
    x = 196,746,613.36/20,308.56
  6. Step 6: Final answer
    x = 9,687.87

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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.