Home / 20,161.38-30,242.48-7,338.11

Finding the Fourth Proportional to 20,161.38, 30,242.48 and 7,338.11

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Solution

The fourth proportional to 20,161.38, 30,242.48 and 7,338.11 is: 11,007.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,161.38 : 30,242.48 = 7,338.11 : x
  2. Step 2: Convert to fraction form
    20,161.38/30,242.48 = 7,338.11/x
  3. Step 3: Cross multiply
    20,161.38x = 30,242.48 × 7,338.11
  4. Step 4: Simplify right side
    20,161.38x = 221,922,457.01
  5. Step 5: Solve for x
    x = 221,922,457.01/20,161.38
  6. Step 6: Final answer
    x = 11,007.30

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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.