Home / 10,121.04-15,180.96-3,880.80

Finding the Fourth Proportional to 10,121.04, 15,180.96 and 3,880.80

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Solution

The fourth proportional to 10,121.04, 15,180.96 and 3,880.80 is: 5,820.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,121.04 : 15,180.96 = 3,880.80 : x
  2. Step 2: Convert to fraction form
    10,121.04/15,180.96 = 3,880.80/x
  3. Step 3: Cross multiply
    10,121.04x = 15,180.96 × 3,880.80
  4. Step 4: Simplify right side
    10,121.04x = 58,914,269.57
  5. Step 5: Solve for x
    x = 58,914,269.57/10,121.04
  6. Step 6: Final answer
    x = 5,820.97

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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.