Home / 12,605.72-18,911.41-3,720.96

Finding the Fourth Proportional to 12,605.72, 18,911.41 and 3,720.96

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Solution

The fourth proportional to 12,605.72, 18,911.41 and 3,720.96 is: 5,582.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,605.72 : 18,911.41 = 3,720.96 : x
  2. Step 2: Convert to fraction form
    12,605.72/18,911.41 = 3,720.96/x
  3. Step 3: Cross multiply
    12,605.72x = 18,911.41 × 3,720.96
  4. Step 4: Simplify right side
    12,605.72x = 70,368,600.15
  5. Step 5: Solve for x
    x = 70,368,600.15/12,605.72
  6. Step 6: Final answer
    x = 5,582.28

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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.