Home / 13,061.87-19,579.40-5,161.19

Finding the Fourth Proportional to 13,061.87, 19,579.40 and 5,161.19

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Solution

The fourth proportional to 13,061.87, 19,579.40 and 5,161.19 is: 7,736.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,061.87 : 19,579.40 = 5,161.19 : x
  2. Step 2: Convert to fraction form
    13,061.87/19,579.40 = 5,161.19/x
  3. Step 3: Cross multiply
    13,061.87x = 19,579.40 × 5,161.19
  4. Step 4: Simplify right side
    13,061.87x = 101,052,899.14
  5. Step 5: Solve for x
    x = 101,052,899.14/13,061.87
  6. Step 6: Final answer
    x = 7,736.48

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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.