Home / 20,731.10-31,072.31-9,614.38

Finding the Fourth Proportional to 20,731.10, 31,072.31 and 9,614.38

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Solution

The fourth proportional to 20,731.10, 31,072.31 and 9,614.38 is: 14,410.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,731.10 : 31,072.31 = 9,614.38 : x
  2. Step 2: Convert to fraction form
    20,731.10/31,072.31 = 9,614.38/x
  3. Step 3: Cross multiply
    20,731.10x = 31,072.31 × 9,614.38
  4. Step 4: Simplify right side
    20,731.10x = 298,740,995.82
  5. Step 5: Solve for x
    x = 298,740,995.82/20,731.10
  6. Step 6: Final answer
    x = 14,410.28

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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.