Home / 12,636.72-18,955.08-4,426.80

Finding the Fourth Proportional to 12,636.72, 18,955.08 and 4,426.80

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Solution

The fourth proportional to 12,636.72, 18,955.08 and 4,426.80 is: 6,640.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,636.72 : 18,955.08 = 4,426.80 : x
  2. Step 2: Convert to fraction form
    12,636.72/18,955.08 = 4,426.80/x
  3. Step 3: Cross multiply
    12,636.72x = 18,955.08 × 4,426.80
  4. Step 4: Simplify right side
    12,636.72x = 83,910,348.14
  5. Step 5: Solve for x
    x = 83,910,348.14/12,636.72
  6. Step 6: Final answer
    x = 6,640.20

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Similar ratio
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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.