Home / 21,016.33-29,002.13-11,456.30

Finding the Fourth Proportional to 21,016.33, 29,002.13 and 11,456.30

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Solution

The fourth proportional to 21,016.33, 29,002.13 and 11,456.30 is: 15,809.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,016.33 : 29,002.13 = 11,456.30 : x
  2. Step 2: Convert to fraction form
    21,016.33/29,002.13 = 11,456.30/x
  3. Step 3: Cross multiply
    21,016.33x = 29,002.13 × 11,456.30
  4. Step 4: Simplify right side
    21,016.33x = 332,257,101.92
  5. Step 5: Solve for x
    x = 332,257,101.92/21,016.33
  6. Step 6: Final answer
    x = 15,809.47

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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.