Home / 13,390.32-20,083.20-3,529.70

Finding the Fourth Proportional to 13,390.32, 20,083.20 and 3,529.70

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Solution

The fourth proportional to 13,390.32, 20,083.20 and 3,529.70 is: 5,293.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,390.32 : 20,083.20 = 3,529.70 : x
  2. Step 2: Convert to fraction form
    13,390.32/20,083.20 = 3,529.70/x
  3. Step 3: Cross multiply
    13,390.32x = 20,083.20 × 3,529.70
  4. Step 4: Simplify right side
    13,390.32x = 70,887,671.04
  5. Step 5: Solve for x
    x = 70,887,671.04/13,390.32
  6. Step 6: Final answer
    x = 5,293.95

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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.