Home / 13,190.09-19,788.09-4,424.78

Finding the Fourth Proportional to 13,190.09, 19,788.09 and 4,424.78

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Solution

The fourth proportional to 13,190.09, 19,788.09 and 4,424.78 is: 6,638.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,190.09 : 19,788.09 = 4,424.78 : x
  2. Step 2: Convert to fraction form
    13,190.09/19,788.09 = 4,424.78/x
  3. Step 3: Cross multiply
    13,190.09x = 19,788.09 × 4,424.78
  4. Step 4: Simplify right side
    13,190.09x = 87,557,845.93
  5. Step 5: Solve for x
    x = 87,557,845.93/13,190.09
  6. Step 6: Final answer
    x = 6,638.16

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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.