Home / 10,120.66-15,180.39-3,880.42

Finding the Fourth Proportional to 10,120.66, 15,180.39 and 3,880.42

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Solution

The fourth proportional to 10,120.66, 15,180.39 and 3,880.42 is: 5,820.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,120.66 : 15,180.39 = 3,880.42 : x
  2. Step 2: Convert to fraction form
    10,120.66/15,180.39 = 3,880.42/x
  3. Step 3: Cross multiply
    10,120.66x = 15,180.39 × 3,880.42
  4. Step 4: Simplify right side
    10,120.66x = 58,906,251.01
  5. Step 5: Solve for x
    x = 58,906,251.01/10,120.66
  6. Step 6: Final answer
    x = 5,820.40

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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.