Home / 20,716.20-31,055.64-7,559.34

Finding the Fourth Proportional to 20,716.20, 31,055.64 and 7,559.34

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Solution

The fourth proportional to 20,716.20, 31,055.64 and 7,559.34 is: 11,332.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,716.20 : 31,055.64 = 7,559.34 : x
  2. Step 2: Convert to fraction form
    20,716.20/31,055.64 = 7,559.34/x
  3. Step 3: Cross multiply
    20,716.20x = 31,055.64 × 7,559.34
  4. Step 4: Simplify right side
    20,716.20x = 234,760,141.68
  5. Step 5: Solve for x
    x = 234,760,141.68/20,716.20
  6. Step 6: Final answer
    x = 11,332.20

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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.