Home / 20,141.68-30,212.30-12,246.38

Finding the Fourth Proportional to 20,141.68, 30,212.30 and 12,246.38

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Solution

The fourth proportional to 20,141.68, 30,212.30 and 12,246.38 is: 18,369.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,141.68 : 30,212.30 = 12,246.38 : x
  2. Step 2: Convert to fraction form
    20,141.68/30,212.30 = 12,246.38/x
  3. Step 3: Cross multiply
    20,141.68x = 30,212.30 × 12,246.38
  4. Step 4: Simplify right side
    20,141.68x = 369,991,306.47
  5. Step 5: Solve for x
    x = 369,991,306.47/20,141.68
  6. Step 6: Final answer
    x = 18,369.44

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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.