Home / 12,469.35-18,710.10-5,078.91

Finding the Fourth Proportional to 12,469.35, 18,710.10 and 5,078.91

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Solution

The fourth proportional to 12,469.35, 18,710.10 and 5,078.91 is: 7,620.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,469.35 : 18,710.10 = 5,078.91 : x
  2. Step 2: Convert to fraction form
    12,469.35/18,710.10 = 5,078.91/x
  3. Step 3: Cross multiply
    12,469.35x = 18,710.10 × 5,078.91
  4. Step 4: Simplify right side
    12,469.35x = 95,026,913.99
  5. Step 5: Solve for x
    x = 95,026,913.99/12,469.35
  6. Step 6: Final answer
    x = 7,620.84

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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.