Home / 12,213.46-18,320.73-5,186.44

Finding the Fourth Proportional to 12,213.46, 18,320.73 and 5,186.44

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Solution

The fourth proportional to 12,213.46, 18,320.73 and 5,186.44 is: 7,779.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,213.46 : 18,320.73 = 5,186.44 : x
  2. Step 2: Convert to fraction form
    12,213.46/18,320.73 = 5,186.44/x
  3. Step 3: Cross multiply
    12,213.46x = 18,320.73 × 5,186.44
  4. Step 4: Simplify right side
    12,213.46x = 95,019,366.90
  5. Step 5: Solve for x
    x = 95,019,366.90/12,213.46
  6. Step 6: Final answer
    x = 7,779.89

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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.