Home / 13,639.83-20,459.58-3,778.74

Finding the Fourth Proportional to 13,639.83, 20,459.58 and 3,778.74

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Solution

The fourth proportional to 13,639.83, 20,459.58 and 3,778.74 is: 5,668.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,639.83 : 20,459.58 = 3,778.74 : x
  2. Step 2: Convert to fraction form
    13,639.83/20,459.58 = 3,778.74/x
  3. Step 3: Cross multiply
    13,639.83x = 20,459.58 × 3,778.74
  4. Step 4: Simplify right side
    13,639.83x = 77,311,433.33
  5. Step 5: Solve for x
    x = 77,311,433.33/13,639.83
  6. Step 6: Final answer
    x = 5,668.06

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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.