Home / 12,639.35-18,958.26-3,874.25

Finding the Fourth Proportional to 12,639.35, 18,958.26 and 3,874.25

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Solution

The fourth proportional to 12,639.35, 18,958.26 and 3,874.25 is: 5,811.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,639.35 : 18,958.26 = 3,874.25 : x
  2. Step 2: Convert to fraction form
    12,639.35/18,958.26 = 3,874.25/x
  3. Step 3: Cross multiply
    12,639.35x = 18,958.26 × 3,874.25
  4. Step 4: Simplify right side
    12,639.35x = 73,449,038.81
  5. Step 5: Solve for x
    x = 73,449,038.81/12,639.35
  6. Step 6: Final answer
    x = 5,811.14

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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.