Home / 21,260.11-31,869.48-10,163.92

Finding the Fourth Proportional to 21,260.11, 31,869.48 and 10,163.92

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Solution

The fourth proportional to 21,260.11, 31,869.48 and 10,163.92 is: 15,235.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,260.11 : 31,869.48 = 10,163.92 : x
  2. Step 2: Convert to fraction form
    21,260.11/31,869.48 = 10,163.92/x
  3. Step 3: Cross multiply
    21,260.11x = 31,869.48 × 10,163.92
  4. Step 4: Simplify right side
    21,260.11x = 323,918,845.16
  5. Step 5: Solve for x
    x = 323,918,845.16/21,260.11
  6. Step 6: Final answer
    x = 15,235.99

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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.