Home / 21,013.26-28,997.92-11,453.23

Finding the Fourth Proportional to 21,013.26, 28,997.92 and 11,453.23

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Solution

The fourth proportional to 21,013.26, 28,997.92 and 11,453.23 is: 15,805.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,013.26 : 28,997.92 = 11,453.23 : x
  2. Step 2: Convert to fraction form
    21,013.26/28,997.92 = 11,453.23/x
  3. Step 3: Cross multiply
    21,013.26x = 28,997.92 × 11,453.23
  4. Step 4: Simplify right side
    21,013.26x = 332,119,847.28
  5. Step 5: Solve for x
    x = 332,119,847.28/21,013.26
  6. Step 6: Final answer
    x = 15,805.25

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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.