Home / 18,664.43-28,001.74-5,516.79

Finding the Fourth Proportional to 18,664.43, 28,001.74 and 5,516.79

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Solution

The fourth proportional to 18,664.43, 28,001.74 and 5,516.79 is: 8,276.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,664.43 : 28,001.74 = 5,516.79 : x
  2. Step 2: Convert to fraction form
    18,664.43/28,001.74 = 5,516.79/x
  3. Step 3: Cross multiply
    18,664.43x = 28,001.74 × 5,516.79
  4. Step 4: Simplify right side
    18,664.43x = 154,479,565.41
  5. Step 5: Solve for x
    x = 154,479,565.41/18,664.43
  6. Step 6: Final answer
    x = 8,276.68

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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.