Home / 21,198.98-29,254.77-13,245.86

Finding the Fourth Proportional to 21,198.98, 29,254.77 and 13,245.86

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Solution

The fourth proportional to 21,198.98, 29,254.77 and 13,245.86 is: 18,279.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,198.98 : 29,254.77 = 13,245.86 : x
  2. Step 2: Convert to fraction form
    21,198.98/29,254.77 = 13,245.86/x
  3. Step 3: Cross multiply
    21,198.98x = 29,254.77 × 13,245.86
  4. Step 4: Simplify right side
    21,198.98x = 387,504,660.89
  5. Step 5: Solve for x
    x = 387,504,660.89/21,198.98
  6. Step 6: Final answer
    x = 18,279.40

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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.