Home / 12,170.62-18,256.08-4,272.82

Finding the Fourth Proportional to 12,170.62, 18,256.08 and 4,272.82

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Solution

The fourth proportional to 12,170.62, 18,256.08 and 4,272.82 is: 6,409.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,170.62 : 18,256.08 = 4,272.82 : x
  2. Step 2: Convert to fraction form
    12,170.62/18,256.08 = 4,272.82/x
  3. Step 3: Cross multiply
    12,170.62x = 18,256.08 × 4,272.82
  4. Step 4: Simplify right side
    12,170.62x = 78,004,914.13
  5. Step 5: Solve for x
    x = 78,004,914.13/12,170.62
  6. Step 6: Final answer
    x = 6,409.28

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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.