Home / 21,791.60-32,687.40-18,101.20

Finding the Fourth Proportional to 21,791.60, 32,687.40 and 18,101.20

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Solution

The fourth proportional to 21,791.60, 32,687.40 and 18,101.20 is: 27,151.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,791.60 : 32,687.40 = 18,101.20 : x
  2. Step 2: Convert to fraction form
    21,791.60/32,687.40 = 18,101.20/x
  3. Step 3: Cross multiply
    21,791.60x = 32,687.40 × 18,101.20
  4. Step 4: Simplify right side
    21,791.60x = 591,681,164.88
  5. Step 5: Solve for x
    x = 591,681,164.88/21,791.60
  6. Step 6: Final answer
    x = 27,151.80

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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.