Home / 21,043.92-31,551.24-10,648.56

Finding the Fourth Proportional to 21,043.92, 31,551.24 and 10,648.56

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Solution

The fourth proportional to 21,043.92, 31,551.24 and 10,648.56 is: 15,965.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,043.92 : 31,551.24 = 10,648.56 : x
  2. Step 2: Convert to fraction form
    21,043.92/31,551.24 = 10,648.56/x
  3. Step 3: Cross multiply
    21,043.92x = 31,551.24 × 10,648.56
  4. Step 4: Simplify right side
    21,043.92x = 335,975,272.21
  5. Step 5: Solve for x
    x = 335,975,272.21/21,043.92
  6. Step 6: Final answer
    x = 15,965.43

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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.