Home / 13,306.58-18,361.69-7,640.22

Finding the Fourth Proportional to 13,306.58, 18,361.69 and 7,640.22

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Solution

The fourth proportional to 13,306.58, 18,361.69 and 7,640.22 is: 10,542.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,306.58 : 18,361.69 = 7,640.22 : x
  2. Step 2: Convert to fraction form
    13,306.58/18,361.69 = 7,640.22/x
  3. Step 3: Cross multiply
    13,306.58x = 18,361.69 × 7,640.22
  4. Step 4: Simplify right side
    13,306.58x = 140,287,400.93
  5. Step 5: Solve for x
    x = 140,287,400.93/13,306.58
  6. Step 6: Final answer
    x = 10,542.71

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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.