Home / 13,759.80-18,989.82-7,792.56

Finding the Fourth Proportional to 13,759.80, 18,989.82 and 7,792.56

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Solution

The fourth proportional to 13,759.80, 18,989.82 and 7,792.56 is: 10,754.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,759.80 : 18,989.82 = 7,792.56 : x
  2. Step 2: Convert to fraction form
    13,759.80/18,989.82 = 7,792.56/x
  3. Step 3: Cross multiply
    13,759.80x = 18,989.82 × 7,792.56
  4. Step 4: Simplify right side
    13,759.80x = 147,979,311.74
  5. Step 5: Solve for x
    x = 147,979,311.74/13,759.80
  6. Step 6: Final answer
    x = 10,754.47

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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.