Home / 12,213.20-18,317.40-4,005.20

Finding the Fourth Proportional to 12,213.20, 18,317.40 and 4,005.20

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Solution

The fourth proportional to 12,213.20, 18,317.40 and 4,005.20 is: 6,007.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,213.20 : 18,317.40 = 4,005.20 : x
  2. Step 2: Convert to fraction form
    12,213.20/18,317.40 = 4,005.20/x
  3. Step 3: Cross multiply
    12,213.20x = 18,317.40 × 4,005.20
  4. Step 4: Simplify right side
    12,213.20x = 73,364,850.48
  5. Step 5: Solve for x
    x = 73,364,850.48/12,213.20
  6. Step 6: Final answer
    x = 6,007.01

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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.