Home / 21,027.12-31,540.68-11,799.60

Finding the Fourth Proportional to 21,027.12, 31,540.68 and 11,799.60

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Solution

The fourth proportional to 21,027.12, 31,540.68 and 11,799.60 is: 17,699.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,027.12 : 31,540.68 = 11,799.60 : x
  2. Step 2: Convert to fraction form
    21,027.12/31,540.68 = 11,799.60/x
  3. Step 3: Cross multiply
    21,027.12x = 31,540.68 × 11,799.60
  4. Step 4: Simplify right side
    21,027.12x = 372,167,407.73
  5. Step 5: Solve for x
    x = 372,167,407.73/21,027.12
  6. Step 6: Final answer
    x = 17,699.40

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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.