Home / 13,328.71-20,005.31-6,759.61

Finding the Fourth Proportional to 13,328.71, 20,005.31 and 6,759.61

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Solution

The fourth proportional to 13,328.71, 20,005.31 and 6,759.61 is: 10,145.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,328.71 : 20,005.31 = 6,759.61 : x
  2. Step 2: Convert to fraction form
    13,328.71/20,005.31 = 6,759.61/x
  3. Step 3: Cross multiply
    13,328.71x = 20,005.31 × 6,759.61
  4. Step 4: Simplify right side
    13,328.71x = 135,228,093.53
  5. Step 5: Solve for x
    x = 135,228,093.53/13,328.71
  6. Step 6: Final answer
    x = 10,145.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.