Home / 20,141.25-30,212.63-7,658.94

Finding the Fourth Proportional to 20,141.25, 30,212.63 and 7,658.94

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Solution

The fourth proportional to 20,141.25, 30,212.63 and 7,658.94 is: 11,488.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,141.25 : 30,212.63 = 7,658.94 : x
  2. Step 2: Convert to fraction form
    20,141.25/30,212.63 = 7,658.94/x
  3. Step 3: Cross multiply
    20,141.25x = 30,212.63 × 7,658.94
  4. Step 4: Simplify right side
    20,141.25x = 231,396,824.14
  5. Step 5: Solve for x
    x = 231,396,824.14/20,141.25
  6. Step 6: Final answer
    x = 11,488.70

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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.