Home / 12,114.12-18,169.82-4,215.26

Finding the Fourth Proportional to 12,114.12, 18,169.82 and 4,215.26

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Solution

The fourth proportional to 12,114.12, 18,169.82 and 4,215.26 is: 6,322.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,114.12 : 18,169.82 = 4,215.26 : x
  2. Step 2: Convert to fraction form
    12,114.12/18,169.82 = 4,215.26/x
  3. Step 3: Cross multiply
    12,114.12x = 18,169.82 × 4,215.26
  4. Step 4: Simplify right side
    12,114.12x = 76,590,515.45
  5. Step 5: Solve for x
    x = 76,590,515.45/12,114.12
  6. Step 6: Final answer
    x = 6,322.42

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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.