Home / 21,408.48-32,204.88-18,367.20

Finding the Fourth Proportional to 21,408.48, 32,204.88 and 18,367.20

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Solution

The fourth proportional to 21,408.48, 32,204.88 and 18,367.20 is: 27,629.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,408.48 : 32,204.88 = 18,367.20 : x
  2. Step 2: Convert to fraction form
    21,408.48/32,204.88 = 18,367.20/x
  3. Step 3: Cross multiply
    21,408.48x = 32,204.88 × 18,367.20
  4. Step 4: Simplify right side
    21,408.48x = 591,513,471.94
  5. Step 5: Solve for x
    x = 591,513,471.94/21,408.48
  6. Step 6: Final answer
    x = 27,629.87

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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.