Home / 20,109.24-30,180.45-10,116.81

Finding the Fourth Proportional to 20,109.24, 30,180.45 and 10,116.81

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Solution

The fourth proportional to 20,109.24, 30,180.45 and 10,116.81 is: 15,183.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,109.24 : 30,180.45 = 10,116.81 : x
  2. Step 2: Convert to fraction form
    20,109.24/30,180.45 = 10,116.81/x
  3. Step 3: Cross multiply
    20,109.24x = 30,180.45 × 10,116.81
  4. Step 4: Simplify right side
    20,109.24x = 305,329,878.36
  5. Step 5: Solve for x
    x = 305,329,878.36/20,109.24
  6. Step 6: Final answer
    x = 15,183.56

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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.