Home / 21,013.44-28,998.16-11,453.42

Finding the Fourth Proportional to 21,013.44, 28,998.16 and 11,453.42

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Solution

The fourth proportional to 21,013.44, 28,998.16 and 11,453.42 is: 15,805.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,013.44 : 28,998.16 = 11,453.42 : x
  2. Step 2: Convert to fraction form
    21,013.44/28,998.16 = 11,453.42/x
  3. Step 3: Cross multiply
    21,013.44x = 28,998.16 × 11,453.42
  4. Step 4: Simplify right side
    21,013.44x = 332,128,105.71
  5. Step 5: Solve for x
    x = 332,128,105.71/21,013.44
  6. Step 6: Final answer
    x = 15,805.51

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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.