Home / 12,137.36-18,206.28-3,817.20

Finding the Fourth Proportional to 12,137.36, 18,206.28 and 3,817.20

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Solution

The fourth proportional to 12,137.36, 18,206.28 and 3,817.20 is: 5,725.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,137.36 : 18,206.28 = 3,817.20 : x
  2. Step 2: Convert to fraction form
    12,137.36/18,206.28 = 3,817.20/x
  3. Step 3: Cross multiply
    12,137.36x = 18,206.28 × 3,817.20
  4. Step 4: Simplify right side
    12,137.36x = 69,497,012.02
  5. Step 5: Solve for x
    x = 69,497,012.02/12,137.36
  6. Step 6: Final answer
    x = 5,725.88

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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.