Home / 12,655.32-18,982.44-3,889.86

Finding the Fourth Proportional to 12,655.32, 18,982.44 and 3,889.86

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Solution

The fourth proportional to 12,655.32, 18,982.44 and 3,889.86 is: 5,834.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,655.32 : 18,982.44 = 3,889.86 : x
  2. Step 2: Convert to fraction form
    12,655.32/18,982.44 = 3,889.86/x
  3. Step 3: Cross multiply
    12,655.32x = 18,982.44 × 3,889.86
  4. Step 4: Simplify right side
    12,655.32x = 73,839,034.06
  5. Step 5: Solve for x
    x = 73,839,034.06/12,655.32
  6. Step 6: Final answer
    x = 5,834.62

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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.