Home / 18,722-25,839.84-10,764.32

Finding the Fourth Proportional to 18,722, 25,839.84 and 10,764.32

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Solution

The fourth proportional to 18,722, 25,839.84 and 10,764.32 is: 14,856.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,722 : 25,839.84 = 10,764.32 : x
  2. Step 2: Convert to fraction form
    18,722/25,839.84 = 10,764.32/x
  3. Step 3: Cross multiply
    18,722x = 25,839.84 × 10,764.32
  4. Step 4: Simplify right side
    18,722x = 278,148,306.51
  5. Step 5: Solve for x
    x = 278,148,306.51/18,722
  6. Step 6: Final answer
    x = 14,856.76

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.