Home / 13,767.20-18,998.76-7,479.58

Finding the Fourth Proportional to 13,767.20, 18,998.76 and 7,479.58

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Solution

The fourth proportional to 13,767.20, 18,998.76 and 7,479.58 is: 10,321.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,767.20 : 18,998.76 = 7,479.58 : x
  2. Step 2: Convert to fraction form
    13,767.20/18,998.76 = 7,479.58/x
  3. Step 3: Cross multiply
    13,767.20x = 18,998.76 × 7,479.58
  4. Step 4: Simplify right side
    13,767.20x = 142,102,745.32
  5. Step 5: Solve for x
    x = 142,102,745.32/13,767.20
  6. Step 6: Final answer
    x = 10,321.83

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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.