Home / 12,121.50-18,184.80-3,800.88

Finding the Fourth Proportional to 12,121.50, 18,184.80 and 3,800.88

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Solution

The fourth proportional to 12,121.50, 18,184.80 and 3,800.88 is: 5,702.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,121.50 : 18,184.80 = 3,800.88 : x
  2. Step 2: Convert to fraction form
    12,121.50/18,184.80 = 3,800.88/x
  3. Step 3: Cross multiply
    12,121.50x = 18,184.80 × 3,800.88
  4. Step 4: Simplify right side
    12,121.50x = 69,118,242.62
  5. Step 5: Solve for x
    x = 69,118,242.62/12,121.50
  6. Step 6: Final answer
    x = 5,702.12

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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.