Home / 18,103.80-27,154.84-6,418.72

Finding the Fourth Proportional to 18,103.80, 27,154.84 and 6,418.72

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Solution

The fourth proportional to 18,103.80, 27,154.84 and 6,418.72 is: 9,627.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,103.80 : 27,154.84 = 6,418.72 : x
  2. Step 2: Convert to fraction form
    18,103.80/27,154.84 = 6,418.72/x
  3. Step 3: Cross multiply
    18,103.80x = 27,154.84 × 6,418.72
  4. Step 4: Simplify right side
    18,103.80x = 174,299,314.60
  5. Step 5: Solve for x
    x = 174,299,314.60/18,103.80
  6. Step 6: Final answer
    x = 9,627.78

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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.