Home / 12,641.87-18,962.79-11,862.75

Finding the Fourth Proportional to 12,641.87, 18,962.79 and 11,862.75

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Solution

The fourth proportional to 12,641.87, 18,962.79 and 11,862.75 is: 17,794.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,641.87 : 18,962.79 = 11,862.75 : x
  2. Step 2: Convert to fraction form
    12,641.87/18,962.79 = 11,862.75/x
  3. Step 3: Cross multiply
    12,641.87x = 18,962.79 × 11,862.75
  4. Step 4: Simplify right side
    12,641.87x = 224,950,930.43
  5. Step 5: Solve for x
    x = 224,950,930.43/12,641.87
  6. Step 6: Final answer
    x = 17,794.11

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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.