Home / 13,761.82-18,991.31-7,474.19

Finding the Fourth Proportional to 13,761.82, 18,991.31 and 7,474.19

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Solution

The fourth proportional to 13,761.82, 18,991.31 and 7,474.19 is: 10,314.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,761.82 : 18,991.31 = 7,474.19 : x
  2. Step 2: Convert to fraction form
    13,761.82/18,991.31 = 7,474.19/x
  3. Step 3: Cross multiply
    13,761.82x = 18,991.31 × 7,474.19
  4. Step 4: Simplify right side
    13,761.82x = 141,944,621.92
  5. Step 5: Solve for x
    x = 141,944,621.92/13,761.82
  6. Step 6: Final answer
    x = 10,314.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.