Home / 13,820.47-20,733.79-5,500.85

Finding the Fourth Proportional to 13,820.47, 20,733.79 and 5,500.85

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Solution

The fourth proportional to 13,820.47, 20,733.79 and 5,500.85 is: 8,252.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,820.47 : 20,733.79 = 5,500.85 : x
  2. Step 2: Convert to fraction form
    13,820.47/20,733.79 = 5,500.85/x
  3. Step 3: Cross multiply
    13,820.47x = 20,733.79 × 5,500.85
  4. Step 4: Simplify right side
    13,820.47x = 114,053,506.80
  5. Step 5: Solve for x
    x = 114,053,506.80/13,820.47
  6. Step 6: Final answer
    x = 8,252.51

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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.