Home / 20,964.38-31,415.97-9,723.15

Finding the Fourth Proportional to 20,964.38, 31,415.97 and 9,723.15

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Solution

The fourth proportional to 20,964.38, 31,415.97 and 9,723.15 is: 14,570.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,964.38 : 31,415.97 = 9,723.15 : x
  2. Step 2: Convert to fraction form
    20,964.38/31,415.97 = 9,723.15/x
  3. Step 3: Cross multiply
    20,964.38x = 31,415.97 × 9,723.15
  4. Step 4: Simplify right side
    20,964.38x = 305,462,188.71
  5. Step 5: Solve for x
    x = 305,462,188.71/20,964.38
  6. Step 6: Final answer
    x = 14,570.54

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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.