Home / 20,148.30-30,217.86-7,663.86

Finding the Fourth Proportional to 20,148.30, 30,217.86 and 7,663.86

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Solution

The fourth proportional to 20,148.30, 30,217.86 and 7,663.86 is: 11,494.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,148.30 : 30,217.86 = 7,663.86 : x
  2. Step 2: Convert to fraction form
    20,148.30/30,217.86 = 7,663.86/x
  3. Step 3: Cross multiply
    20,148.30x = 30,217.86 × 7,663.86
  4. Step 4: Simplify right side
    20,148.30x = 231,585,448.54
  5. Step 5: Solve for x
    x = 231,585,448.54/20,148.30
  6. Step 6: Final answer
    x = 11,494.04

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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.