Home / 21,291.19-31,932.96-5,705.17

Finding the Fourth Proportional to 21,291.19, 31,932.96 and 5,705.17

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Solution

The fourth proportional to 21,291.19, 31,932.96 and 5,705.17 is: 8,556.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,291.19 : 31,932.96 = 5,705.17 : x
  2. Step 2: Convert to fraction form
    21,291.19/31,932.96 = 5,705.17/x
  3. Step 3: Cross multiply
    21,291.19x = 31,932.96 × 5,705.17
  4. Step 4: Simplify right side
    21,291.19x = 182,182,965.40
  5. Step 5: Solve for x
    x = 182,182,965.40/21,291.19
  6. Step 6: Final answer
    x = 8,556.73

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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.