Home / 20,180.36-30,232.38-11,421.56

Finding the Fourth Proportional to 20,180.36, 30,232.38 and 11,421.56

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Solution

The fourth proportional to 20,180.36, 30,232.38 and 11,421.56 is: 17,110.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,180.36 : 30,232.38 = 11,421.56 : x
  2. Step 2: Convert to fraction form
    20,180.36/30,232.38 = 11,421.56/x
  3. Step 3: Cross multiply
    20,180.36x = 30,232.38 × 11,421.56
  4. Step 4: Simplify right side
    20,180.36x = 345,300,942.11
  5. Step 5: Solve for x
    x = 345,300,942.11/20,180.36
  6. Step 6: Final answer
    x = 17,110.74

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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.