Home / 13,761.88-18,991.38-7,474.26

Finding the Fourth Proportional to 13,761.88, 18,991.38 and 7,474.26

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Solution

The fourth proportional to 13,761.88, 18,991.38 and 7,474.26 is: 10,314.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,761.88 : 18,991.38 = 7,474.26 : x
  2. Step 2: Convert to fraction form
    13,761.88/18,991.38 = 7,474.26/x
  3. Step 3: Cross multiply
    13,761.88x = 18,991.38 × 7,474.26
  4. Step 4: Simplify right side
    13,761.88x = 141,946,511.88
  5. Step 5: Solve for x
    x = 141,946,511.88/13,761.88
  6. Step 6: Final answer
    x = 10,314.47

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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.