Home / 12,581.11-18,871.67-5,647.51

Finding the Fourth Proportional to 12,581.11, 18,871.67 and 5,647.51

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Solution

The fourth proportional to 12,581.11, 18,871.67 and 5,647.51 is: 8,471.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,581.11 : 18,871.67 = 5,647.51 : x
  2. Step 2: Convert to fraction form
    12,581.11/18,871.67 = 5,647.51/x
  3. Step 3: Cross multiply
    12,581.11x = 18,871.67 × 5,647.51
  4. Step 4: Simplify right side
    12,581.11x = 106,577,945.04
  5. Step 5: Solve for x
    x = 106,577,945.04/12,581.11
  6. Step 6: Final answer
    x = 8,471.27

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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.