Home / 18,963.66-28,445.97-11,178.06

Finding the Fourth Proportional to 18,963.66, 28,445.97 and 11,178.06

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Solution

The fourth proportional to 18,963.66, 28,445.97 and 11,178.06 is: 16,767.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,963.66 : 28,445.97 = 11,178.06 : x
  2. Step 2: Convert to fraction form
    18,963.66/28,445.97 = 11,178.06/x
  3. Step 3: Cross multiply
    18,963.66x = 28,445.97 × 11,178.06
  4. Step 4: Simplify right side
    18,963.66x = 317,970,759.42
  5. Step 5: Solve for x
    x = 317,970,759.42/18,963.66
  6. Step 6: Final answer
    x = 16,767.37

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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.