Home / 18,864.80-28,297.20-5,716.52

Finding the Fourth Proportional to 18,864.80, 28,297.20 and 5,716.52

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Solution

The fourth proportional to 18,864.80, 28,297.20 and 5,716.52 is: 8,574.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,864.80 : 28,297.20 = 5,716.52 : x
  2. Step 2: Convert to fraction form
    18,864.80/28,297.20 = 5,716.52/x
  3. Step 3: Cross multiply
    18,864.80x = 28,297.20 × 5,716.52
  4. Step 4: Simplify right side
    18,864.80x = 161,761,509.74
  5. Step 5: Solve for x
    x = 161,761,509.74/18,864.80
  6. Step 6: Final answer
    x = 8,574.78

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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.