Home / 13,619.39-20,427.55-3,760.07

Finding the Fourth Proportional to 13,619.39, 20,427.55 and 3,760.07

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Solution

The fourth proportional to 13,619.39, 20,427.55 and 3,760.07 is: 5,639.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,619.39 : 20,427.55 = 3,760.07 : x
  2. Step 2: Convert to fraction form
    13,619.39/20,427.55 = 3,760.07/x
  3. Step 3: Cross multiply
    13,619.39x = 20,427.55 × 3,760.07
  4. Step 4: Simplify right side
    13,619.39x = 76,808,906.39
  5. Step 5: Solve for x
    x = 76,808,906.39/13,619.39
  6. Step 6: Final answer
    x = 5,639.68

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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.