Home / 13,335.12-18,396.36-7,745.04

Finding the Fourth Proportional to 13,335.12, 18,396.36 and 7,745.04

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Solution

The fourth proportional to 13,335.12, 18,396.36 and 7,745.04 is: 10,684.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,335.12 : 18,396.36 = 7,745.04 : x
  2. Step 2: Convert to fraction form
    13,335.12/18,396.36 = 7,745.04/x
  3. Step 3: Cross multiply
    13,335.12x = 18,396.36 × 7,745.04
  4. Step 4: Simplify right side
    13,335.12x = 142,480,544.05
  5. Step 5: Solve for x
    x = 142,480,544.05/13,335.12
  6. Step 6: Final answer
    x = 10,684.61

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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.