Home / 20,241.48-30,381.18-12,465.48

Finding the Fourth Proportional to 20,241.48, 30,381.18 and 12,465.48

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Solution

The fourth proportional to 20,241.48, 30,381.18 and 12,465.48 is: 18,709.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,241.48 : 30,381.18 = 12,465.48 : x
  2. Step 2: Convert to fraction form
    20,241.48/30,381.18 = 12,465.48/x
  3. Step 3: Cross multiply
    20,241.48x = 30,381.18 × 12,465.48
  4. Step 4: Simplify right side
    20,241.48x = 378,715,991.67
  5. Step 5: Solve for x
    x = 378,715,991.67/20,241.48
  6. Step 6: Final answer
    x = 18,709.90

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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.