Home / 21,009.46-28,993.78-11,450.14

Finding the Fourth Proportional to 21,009.46, 28,993.78 and 11,450.14

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Solution

The fourth proportional to 21,009.46, 28,993.78 and 11,450.14 is: 15,801.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,009.46 : 28,993.78 = 11,450.14 : x
  2. Step 2: Convert to fraction form
    21,009.46/28,993.78 = 11,450.14/x
  3. Step 3: Cross multiply
    21,009.46x = 28,993.78 × 11,450.14
  4. Step 4: Simplify right side
    21,009.46x = 331,982,945.05
  5. Step 5: Solve for x
    x = 331,982,945.05/21,009.46
  6. Step 6: Final answer
    x = 15,801.59

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1.5x scale

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.