Home / 12,631.28-18,946.97-3,866.16

Finding the Fourth Proportional to 12,631.28, 18,946.97 and 3,866.16

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Solution

The fourth proportional to 12,631.28, 18,946.97 and 3,866.16 is: 5,799.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,631.28 : 18,946.97 = 3,866.16 : x
  2. Step 2: Convert to fraction form
    12,631.28/18,946.97 = 3,866.16/x
  3. Step 3: Cross multiply
    12,631.28x = 18,946.97 × 3,866.16
  4. Step 4: Simplify right side
    12,631.28x = 73,252,012.70
  5. Step 5: Solve for x
    x = 73,252,012.70/12,631.28
  6. Step 6: Final answer
    x = 5,799.25

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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.