Home / 12,631.49-18,947.21-3,866.42

Finding the Fourth Proportional to 12,631.49, 18,947.21 and 3,866.42

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Solution

The fourth proportional to 12,631.49, 18,947.21 and 3,866.42 is: 5,799.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,631.49 : 18,947.21 = 3,866.42 : x
  2. Step 2: Convert to fraction form
    12,631.49/18,947.21 = 3,866.42/x
  3. Step 3: Cross multiply
    12,631.49x = 18,947.21 × 3,866.42
  4. Step 4: Simplify right side
    12,631.49x = 73,257,757.62
  5. Step 5: Solve for x
    x = 73,257,757.62/12,631.49
  6. Step 6: Final answer
    x = 5,799.62

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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.