Home / 20,600.28-30,902.40-7,449.60

Finding the Fourth Proportional to 20,600.28, 30,902.40 and 7,449.60

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Solution

The fourth proportional to 20,600.28, 30,902.40 and 7,449.60 is: 11,175.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,600.28 : 30,902.40 = 7,449.60 : x
  2. Step 2: Convert to fraction form
    20,600.28/30,902.40 = 7,449.60/x
  3. Step 3: Cross multiply
    20,600.28x = 30,902.40 × 7,449.60
  4. Step 4: Simplify right side
    20,600.28x = 230,210,519.04
  5. Step 5: Solve for x
    x = 230,210,519.04/20,600.28
  6. Step 6: Final answer
    x = 11,175.12

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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.