Home / 20,738.24-31,066.20-9,629.60

Finding the Fourth Proportional to 20,738.24, 31,066.20 and 9,629.60

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Solution

The fourth proportional to 20,738.24, 31,066.20 and 9,629.60 is: 14,425.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,738.24 : 31,066.20 = 9,629.60 : x
  2. Step 2: Convert to fraction form
    20,738.24/31,066.20 = 9,629.60/x
  3. Step 3: Cross multiply
    20,738.24x = 31,066.20 × 9,629.60
  4. Step 4: Simplify right side
    20,738.24x = 299,155,079.52
  5. Step 5: Solve for x
    x = 299,155,079.52/20,738.24
  6. Step 6: Final answer
    x = 14,425.29

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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.