Home / 20,343.40-30,524.31-12,039.62

Finding the Fourth Proportional to 20,343.40, 30,524.31 and 12,039.62

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Solution

The fourth proportional to 20,343.40, 30,524.31 and 12,039.62 is: 18,064.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,343.40 : 30,524.31 = 12,039.62 : x
  2. Step 2: Convert to fraction form
    20,343.40/30,524.31 = 12,039.62/x
  3. Step 3: Cross multiply
    20,343.40x = 30,524.31 × 12,039.62
  4. Step 4: Simplify right side
    20,343.40x = 367,500,940.54
  5. Step 5: Solve for x
    x = 367,500,940.54/20,343.40
  6. Step 6: Final answer
    x = 18,064.88

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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.