Home / 13,821.15-20,716.32-5,498.94

Finding the Fourth Proportional to 13,821.15, 20,716.32 and 5,498.94

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Solution

The fourth proportional to 13,821.15, 20,716.32 and 5,498.94 is: 8,242.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,821.15 : 20,716.32 = 5,498.94 : x
  2. Step 2: Convert to fraction form
    13,821.15/20,716.32 = 5,498.94/x
  3. Step 3: Cross multiply
    13,821.15x = 20,716.32 × 5,498.94
  4. Step 4: Simplify right side
    13,821.15x = 113,917,800.70
  5. Step 5: Solve for x
    x = 113,917,800.70/13,821.15
  6. Step 6: Final answer
    x = 8,242.28

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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.