Home / 13,619.59-20,429.88-3,759.61

Finding the Fourth Proportional to 13,619.59, 20,429.88 and 3,759.61

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Solution

The fourth proportional to 13,619.59, 20,429.88 and 3,759.61 is: 5,639.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,619.59 : 20,429.88 = 3,759.61 : x
  2. Step 2: Convert to fraction form
    13,619.59/20,429.88 = 3,759.61/x
  3. Step 3: Cross multiply
    13,619.59x = 20,429.88 × 3,759.61
  4. Step 4: Simplify right side
    13,619.59x = 76,808,330.07
  5. Step 5: Solve for x
    x = 76,808,330.07/13,619.59
  6. Step 6: Final answer
    x = 5,639.55

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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.