Home / 12,371.20-18,558.84-6,131.50

Finding the Fourth Proportional to 12,371.20, 18,558.84 and 6,131.50

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Solution

The fourth proportional to 12,371.20, 18,558.84 and 6,131.50 is: 9,198.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,371.20 : 18,558.84 = 6,131.50 : x
  2. Step 2: Convert to fraction form
    12,371.20/18,558.84 = 6,131.50/x
  3. Step 3: Cross multiply
    12,371.20x = 18,558.84 × 6,131.50
  4. Step 4: Simplify right side
    12,371.20x = 113,793,527.46
  5. Step 5: Solve for x
    x = 113,793,527.46/12,371.20
  6. Step 6: Final answer
    x = 9,198.26

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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.