Home / 12,641.28-18,963.48-3,874.80

Finding the Fourth Proportional to 12,641.28, 18,963.48 and 3,874.80

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Solution

The fourth proportional to 12,641.28, 18,963.48 and 3,874.80 is: 5,812.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,641.28 : 18,963.48 = 3,874.80 : x
  2. Step 2: Convert to fraction form
    12,641.28/18,963.48 = 3,874.80/x
  3. Step 3: Cross multiply
    12,641.28x = 18,963.48 × 3,874.80
  4. Step 4: Simplify right side
    12,641.28x = 73,479,692.30
  5. Step 5: Solve for x
    x = 73,479,692.30/12,641.28
  6. Step 6: Final answer
    x = 5,812.68

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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.