Home / 13,382.09-20,063.21-8,118.26

Finding the Fourth Proportional to 13,382.09, 20,063.21 and 8,118.26

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Solution

The fourth proportional to 13,382.09, 20,063.21 and 8,118.26 is: 12,171.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,382.09 : 20,063.21 = 8,118.26 : x
  2. Step 2: Convert to fraction form
    13,382.09/20,063.21 = 8,118.26/x
  3. Step 3: Cross multiply
    13,382.09x = 20,063.21 × 8,118.26
  4. Step 4: Simplify right side
    13,382.09x = 162,878,214.31
  5. Step 5: Solve for x
    x = 162,878,214.31/13,382.09
  6. Step 6: Final answer
    x = 12,171.36

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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.