Home / 18,731.15-28,096.62-7,637.79

Finding the Fourth Proportional to 18,731.15, 28,096.62 and 7,637.79

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Solution

The fourth proportional to 18,731.15, 28,096.62 and 7,637.79 is: 11,456.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,731.15 : 28,096.62 = 7,637.79 : x
  2. Step 2: Convert to fraction form
    18,731.15/28,096.62 = 7,637.79/x
  3. Step 3: Cross multiply
    18,731.15x = 28,096.62 × 7,637.79
  4. Step 4: Simplify right side
    18,731.15x = 214,596,083.27
  5. Step 5: Solve for x
    x = 214,596,083.27/18,731.15
  6. Step 6: Final answer
    x = 11,456.64

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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.