Home / 10,080.76-15,121.08-2,685.20

Finding the Fourth Proportional to 10,080.76, 15,121.08 and 2,685.20

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Solution

The fourth proportional to 10,080.76, 15,121.08 and 2,685.20 is: 4,027.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,080.76 : 15,121.08 = 2,685.20 : x
  2. Step 2: Convert to fraction form
    10,080.76/15,121.08 = 2,685.20/x
  3. Step 3: Cross multiply
    10,080.76x = 15,121.08 × 2,685.20
  4. Step 4: Simplify right side
    10,080.76x = 40,603,124.02
  5. Step 5: Solve for x
    x = 40,603,124.02/10,080.76
  6. Step 6: Final answer
    x = 4,027.78

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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.