Home / 12,655.23-18,984.66-3,890.88

Finding the Fourth Proportional to 12,655.23, 18,984.66 and 3,890.88

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Solution

The fourth proportional to 12,655.23, 18,984.66 and 3,890.88 is: 5,836.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,655.23 : 18,984.66 = 3,890.88 : x
  2. Step 2: Convert to fraction form
    12,655.23/18,984.66 = 3,890.88/x
  3. Step 3: Cross multiply
    12,655.23x = 18,984.66 × 3,890.88
  4. Step 4: Simplify right side
    12,655.23x = 73,867,033.90
  5. Step 5: Solve for x
    x = 73,867,033.90/12,655.23
  6. Step 6: Final answer
    x = 5,836.88

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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.