Home / 20,408.48-30,549.20-15,716.40

Finding the Fourth Proportional to 20,408.48, 30,549.20 and 15,716.40

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Solution

The fourth proportional to 20,408.48, 30,549.20 and 15,716.40 is: 23,525.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,408.48 : 30,549.20 = 15,716.40 : x
  2. Step 2: Convert to fraction form
    20,408.48/30,549.20 = 15,716.40/x
  3. Step 3: Cross multiply
    20,408.48x = 30,549.20 × 15,716.40
  4. Step 4: Simplify right side
    20,408.48x = 480,123,446.88
  5. Step 5: Solve for x
    x = 480,123,446.88/20,408.48
  6. Step 6: Final answer
    x = 23,525.68

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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.