Home / 12,391.36-18,590.68-4,992.01

Finding the Fourth Proportional to 12,391.36, 18,590.68 and 4,992.01

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Solution

The fourth proportional to 12,391.36, 18,590.68 and 4,992.01 is: 7,489.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,391.36 : 18,590.68 = 4,992.01 : x
  2. Step 2: Convert to fraction form
    12,391.36/18,590.68 = 4,992.01/x
  3. Step 3: Cross multiply
    12,391.36x = 18,590.68 × 4,992.01
  4. Step 4: Simplify right side
    12,391.36x = 92,804,860.47
  5. Step 5: Solve for x
    x = 92,804,860.47/12,391.36
  6. Step 6: Final answer
    x = 7,489.48

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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.