Home / 12,443.72-18,663.93-4,121.64

Finding the Fourth Proportional to 12,443.72, 18,663.93 and 4,121.64

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Solution

The fourth proportional to 12,443.72, 18,663.93 and 4,121.64 is: 6,181.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,443.72 : 18,663.93 = 4,121.64 : x
  2. Step 2: Convert to fraction form
    12,443.72/18,663.93 = 4,121.64/x
  3. Step 3: Cross multiply
    12,443.72x = 18,663.93 × 4,121.64
  4. Step 4: Simplify right side
    12,443.72x = 76,926,000.45
  5. Step 5: Solve for x
    x = 76,926,000.45/12,443.72
  6. Step 6: Final answer
    x = 6,181.92

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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.