Home / 13,311.88-18,364.83-8,838.05

Finding the Fourth Proportional to 13,311.88, 18,364.83 and 8,838.05

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Solution

The fourth proportional to 13,311.88, 18,364.83 and 8,838.05 is: 12,192.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,311.88 : 18,364.83 = 8,838.05 : x
  2. Step 2: Convert to fraction form
    13,311.88/18,364.83 = 8,838.05/x
  3. Step 3: Cross multiply
    13,311.88x = 18,364.83 × 8,838.05
  4. Step 4: Simplify right side
    13,311.88x = 162,309,160.81
  5. Step 5: Solve for x
    x = 162,309,160.81/13,311.88
  6. Step 6: Final answer
    x = 12,192.81

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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.