Home / 21,102.92-31,669.92-10,009.64

Finding the Fourth Proportional to 21,102.92, 31,669.92 and 10,009.64

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Solution

The fourth proportional to 21,102.92, 31,669.92 and 10,009.64 is: 15,021.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,102.92 : 31,669.92 = 10,009.64 : x
  2. Step 2: Convert to fraction form
    21,102.92/31,669.92 = 10,009.64/x
  3. Step 3: Cross multiply
    21,102.92x = 31,669.92 × 10,009.64
  4. Step 4: Simplify right side
    21,102.92x = 317,004,339.68
  5. Step 5: Solve for x
    x = 317,004,339.68/21,102.92
  6. Step 6: Final answer
    x = 15,021.83

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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.