Home / 20,238.92-30,358.65-7,759.58

Finding the Fourth Proportional to 20,238.92, 30,358.65 and 7,759.58

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Solution

The fourth proportional to 20,238.92, 30,358.65 and 7,759.58 is: 11,639.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,238.92 : 30,358.65 = 7,759.58 : x
  2. Step 2: Convert to fraction form
    20,238.92/30,358.65 = 7,759.58/x
  3. Step 3: Cross multiply
    20,238.92x = 30,358.65 × 7,759.58
  4. Step 4: Simplify right side
    20,238.92x = 235,570,221.57
  5. Step 5: Solve for x
    x = 235,570,221.57/20,238.92
  6. Step 6: Final answer
    x = 11,639.47

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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.