Home / 21,027.24-31,540.86-7,176.36

Finding the Fourth Proportional to 21,027.24, 31,540.86 and 7,176.36

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Solution

The fourth proportional to 21,027.24, 31,540.86 and 7,176.36 is: 10,764.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,027.24 : 31,540.86 = 7,176.36 : x
  2. Step 2: Convert to fraction form
    21,027.24/31,540.86 = 7,176.36/x
  3. Step 3: Cross multiply
    21,027.24x = 31,540.86 × 7,176.36
  4. Step 4: Simplify right side
    21,027.24x = 226,348,566.07
  5. Step 5: Solve for x
    x = 226,348,566.07/21,027.24
  6. Step 6: Final answer
    x = 10,764.54

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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.