Home / 20,727-31,095.09-7,579.08

Finding the Fourth Proportional to 20,727, 31,095.09 and 7,579.08

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Solution

The fourth proportional to 20,727, 31,095.09 and 7,579.08 is: 11,370.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,727 : 31,095.09 = 7,579.08 : x
  2. Step 2: Convert to fraction form
    20,727/31,095.09 = 7,579.08/x
  3. Step 3: Cross multiply
    20,727x = 31,095.09 × 7,579.08
  4. Step 4: Simplify right side
    20,727x = 235,672,174.72
  5. Step 5: Solve for x
    x = 235,672,174.72/20,727
  6. Step 6: Final answer
    x = 11,370.30

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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.