Home / 21,104.68-31,620.64-13,984.48

Finding the Fourth Proportional to 21,104.68, 31,620.64 and 13,984.48

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Solution

The fourth proportional to 21,104.68, 31,620.64 and 13,984.48 is: 20,952.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,104.68 : 31,620.64 = 13,984.48 : x
  2. Step 2: Convert to fraction form
    21,104.68/31,620.64 = 13,984.48/x
  3. Step 3: Cross multiply
    21,104.68x = 31,620.64 × 13,984.48
  4. Step 4: Simplify right side
    21,104.68x = 442,198,207.67
  5. Step 5: Solve for x
    x = 442,198,207.67/21,104.68
  6. Step 6: Final answer
    x = 20,952.61

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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.