Home / 21,690.36-32,546.88-11,827.80

Finding the Fourth Proportional to 21,690.36, 32,546.88 and 11,827.80

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Solution

The fourth proportional to 21,690.36, 32,546.88 and 11,827.80 is: 17,747.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,690.36 : 32,546.88 = 11,827.80 : x
  2. Step 2: Convert to fraction form
    21,690.36/32,546.88 = 11,827.80/x
  3. Step 3: Cross multiply
    21,690.36x = 32,546.88 × 11,827.80
  4. Step 4: Simplify right side
    21,690.36x = 384,957,987.26
  5. Step 5: Solve for x
    x = 384,957,987.26/21,690.36
  6. Step 6: Final answer
    x = 17,747.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.