Home / 12,289.10-18,429.60-4,496.90

Finding the Fourth Proportional to 12,289.10, 18,429.60 and 4,496.90

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Solution

The fourth proportional to 12,289.10, 18,429.60 and 4,496.90 is: 6,743.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,289.10 : 18,429.60 = 4,496.90 : x
  2. Step 2: Convert to fraction form
    12,289.10/18,429.60 = 4,496.90/x
  3. Step 3: Cross multiply
    12,289.10x = 18,429.60 × 4,496.90
  4. Step 4: Simplify right side
    12,289.10x = 82,876,068.24
  5. Step 5: Solve for x
    x = 82,876,068.24/12,289.10
  6. Step 6: Final answer
    x = 6,743.87

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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.