Home / 13,161.46-18,167.85-8,126.50

Finding the Fourth Proportional to 13,161.46, 18,167.85 and 8,126.50

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Solution

The fourth proportional to 13,161.46, 18,167.85 and 8,126.50 is: 11,217.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,161.46 : 18,167.85 = 8,126.50 : x
  2. Step 2: Convert to fraction form
    13,161.46/18,167.85 = 8,126.50/x
  3. Step 3: Cross multiply
    13,161.46x = 18,167.85 × 8,126.50
  4. Step 4: Simplify right side
    13,161.46x = 147,641,033.03
  5. Step 5: Solve for x
    x = 147,641,033.03/13,161.46
  6. Step 6: Final answer
    x = 11,217.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.