Home / 10,080.48-15,121.92-2,685.60

Finding the Fourth Proportional to 10,080.48, 15,121.92 and 2,685.60

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Solution

The fourth proportional to 10,080.48, 15,121.92 and 2,685.60 is: 4,028.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,080.48 : 15,121.92 = 2,685.60 : x
  2. Step 2: Convert to fraction form
    10,080.48/15,121.92 = 2,685.60/x
  3. Step 3: Cross multiply
    10,080.48x = 15,121.92 × 2,685.60
  4. Step 4: Simplify right side
    10,080.48x = 40,611,428.35
  5. Step 5: Solve for x
    x = 40,611,428.35/10,080.48
  6. Step 6: Final answer
    x = 4,028.72

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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.