Home / 13,626.20-18,810.96-8,917.68

Finding the Fourth Proportional to 13,626.20, 18,810.96 and 8,917.68

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Solution

The fourth proportional to 13,626.20, 18,810.96 and 8,917.68 is: 12,310.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,626.20 : 18,810.96 = 8,917.68 : x
  2. Step 2: Convert to fraction form
    13,626.20/18,810.96 = 8,917.68/x
  3. Step 3: Cross multiply
    13,626.20x = 18,810.96 × 8,917.68
  4. Step 4: Simplify right side
    13,626.20x = 167,750,121.77
  5. Step 5: Solve for x
    x = 167,750,121.77/13,626.20
  6. Step 6: Final answer
    x = 12,310.85

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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.