Home / 20,321.11-28,045.20-12,363.94

Finding the Fourth Proportional to 20,321.11, 28,045.20 and 12,363.94

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Solution

The fourth proportional to 20,321.11, 28,045.20 and 12,363.94 is: 17,063.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,321.11 : 28,045.20 = 12,363.94 : x
  2. Step 2: Convert to fraction form
    20,321.11/28,045.20 = 12,363.94/x
  3. Step 3: Cross multiply
    20,321.11x = 28,045.20 × 12,363.94
  4. Step 4: Simplify right side
    20,321.11x = 346,749,170.09
  5. Step 5: Solve for x
    x = 346,749,170.09/20,321.11
  6. Step 6: Final answer
    x = 17,063.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.