Home / 21,010.07-28,993.90-11,449.96

Finding the Fourth Proportional to 21,010.07, 28,993.90 and 11,449.96

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Solution

The fourth proportional to 21,010.07, 28,993.90 and 11,449.96 is: 15,800.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,010.07 : 28,993.90 = 11,449.96 : x
  2. Step 2: Convert to fraction form
    21,010.07/28,993.90 = 11,449.96/x
  3. Step 3: Cross multiply
    21,010.07x = 28,993.90 × 11,449.96
  4. Step 4: Simplify right side
    21,010.07x = 331,978,793.02
  5. Step 5: Solve for x
    x = 331,978,793.02/21,010.07
  6. Step 6: Final answer
    x = 15,800.94

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.