Home / 12,631.92-18,947.88-4,422

Finding the Fourth Proportional to 12,631.92, 18,947.88 and 4,422

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Solution

The fourth proportional to 12,631.92, 18,947.88 and 4,422 is: 6,633

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,631.92 : 18,947.88 = 4,422 : x
  2. Step 2: Convert to fraction form
    12,631.92/18,947.88 = 4,422/x
  3. Step 3: Cross multiply
    12,631.92x = 18,947.88 × 4,422
  4. Step 4: Simplify right side
    12,631.92x = 83,787,525.36
  5. Step 5: Solve for x
    x = 83,787,525.36/12,631.92
  6. Step 6: Final answer
    x = 6,633

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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.