Home / 13,451.84-20,143.20-8,241.92

Finding the Fourth Proportional to 13,451.84, 20,143.20 and 8,241.92

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Solution

The fourth proportional to 13,451.84, 20,143.20 and 8,241.92 is: 12,341.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,451.84 : 20,143.20 = 8,241.92 : x
  2. Step 2: Convert to fraction form
    13,451.84/20,143.20 = 8,241.92/x
  3. Step 3: Cross multiply
    13,451.84x = 20,143.20 × 8,241.92
  4. Step 4: Simplify right side
    13,451.84x = 166,018,642.94
  5. Step 5: Solve for x
    x = 166,018,642.94/13,451.84
  6. Step 6: Final answer
    x = 12,341.71

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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.