Home / 20,764.05-31,151.04-6,724.10

Finding the Fourth Proportional to 20,764.05, 31,151.04 and 6,724.10

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Solution

The fourth proportional to 20,764.05, 31,151.04 and 6,724.10 is: 10,087.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,764.05 : 31,151.04 = 6,724.10 : x
  2. Step 2: Convert to fraction form
    20,764.05/31,151.04 = 6,724.10/x
  3. Step 3: Cross multiply
    20,764.05x = 31,151.04 × 6,724.10
  4. Step 4: Simplify right side
    20,764.05x = 209,462,518.69
  5. Step 5: Solve for x
    x = 209,462,518.69/20,764.05
  6. Step 6: Final answer
    x = 10,087.75

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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.