Home / 21,305.25-29,399.50-12,353.30

Finding the Fourth Proportional to 21,305.25, 29,399.50 and 12,353.30

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Solution

The fourth proportional to 21,305.25, 29,399.50 and 12,353.30 is: 17,046.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,305.25 : 29,399.50 = 12,353.30 : x
  2. Step 2: Convert to fraction form
    21,305.25/29,399.50 = 12,353.30/x
  3. Step 3: Cross multiply
    21,305.25x = 29,399.50 × 12,353.30
  4. Step 4: Simplify right side
    21,305.25x = 363,180,843.35
  5. Step 5: Solve for x
    x = 363,180,843.35/21,305.25
  6. Step 6: Final answer
    x = 17,046.54

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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.