Home / 12,137.87-18,206.81-3,372.78

Finding the Fourth Proportional to 12,137.87, 18,206.81 and 3,372.78

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Solution

The fourth proportional to 12,137.87, 18,206.81 and 3,372.78 is: 5,059.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,137.87 : 18,206.81 = 3,372.78 : x
  2. Step 2: Convert to fraction form
    12,137.87/18,206.81 = 3,372.78/x
  3. Step 3: Cross multiply
    12,137.87x = 18,206.81 × 3,372.78
  4. Step 4: Simplify right side
    12,137.87x = 61,407,564.63
  5. Step 5: Solve for x
    x = 61,407,564.63/12,137.87
  6. Step 6: Final answer
    x = 5,059.17

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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.