Home / 21,242.63-31,863.94-10,115.58

Finding the Fourth Proportional to 21,242.63, 31,863.94 and 10,115.58

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Solution

The fourth proportional to 21,242.63, 31,863.94 and 10,115.58 is: 15,173.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,242.63 : 31,863.94 = 10,115.58 : x
  2. Step 2: Convert to fraction form
    21,242.63/31,863.94 = 10,115.58/x
  3. Step 3: Cross multiply
    21,242.63x = 31,863.94 × 10,115.58
  4. Step 4: Simplify right side
    21,242.63x = 322,322,149.15
  5. Step 5: Solve for x
    x = 322,322,149.15/21,242.63
  6. Step 6: Final answer
    x = 15,173.37

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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.