Home / 10,080.10-15,121.74-2,685.15

Finding the Fourth Proportional to 10,080.10, 15,121.74 and 2,685.15

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Solution

The fourth proportional to 10,080.10, 15,121.74 and 2,685.15 is: 4,028.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,080.10 : 15,121.74 = 2,685.15 : x
  2. Step 2: Convert to fraction form
    10,080.10/15,121.74 = 2,685.15/x
  3. Step 3: Cross multiply
    10,080.10x = 15,121.74 × 2,685.15
  4. Step 4: Simplify right side
    10,080.10x = 40,604,135.13
  5. Step 5: Solve for x
    x = 40,604,135.13/10,080.10
  6. Step 6: Final answer
    x = 4,028.15

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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.