Home / 21,563.52-29,755.25-12,131.88

Finding the Fourth Proportional to 21,563.52, 29,755.25 and 12,131.88

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Solution

The fourth proportional to 21,563.52, 29,755.25 and 12,131.88 is: 16,740.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,563.52 : 29,755.25 = 12,131.88 : x
  2. Step 2: Convert to fraction form
    21,563.52/29,755.25 = 12,131.88/x
  3. Step 3: Cross multiply
    21,563.52x = 29,755.25 × 12,131.88
  4. Step 4: Simplify right side
    21,563.52x = 360,987,122.37
  5. Step 5: Solve for x
    x = 360,987,122.37/21,563.52
  6. Step 6: Final answer
    x = 16,740.64

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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.