Home / 20,833.24-31,243.32-6,979

Finding the Fourth Proportional to 20,833.24, 31,243.32 and 6,979

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Solution

The fourth proportional to 20,833.24, 31,243.32 and 6,979 is: 10,466.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,833.24 : 31,243.32 = 6,979 : x
  2. Step 2: Convert to fraction form
    20,833.24/31,243.32 = 6,979/x
  3. Step 3: Cross multiply
    20,833.24x = 31,243.32 × 6,979
  4. Step 4: Simplify right side
    20,833.24x = 218,047,130.28
  5. Step 5: Solve for x
    x = 218,047,130.28/20,833.24
  6. Step 6: Final answer
    x = 10,466.31

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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.