Home / 13,131.25-18,119.50-8,029.33

Finding the Fourth Proportional to 13,131.25, 18,119.50 and 8,029.33

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Solution

The fourth proportional to 13,131.25, 18,119.50 and 8,029.33 is: 11,079.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,131.25 : 18,119.50 = 8,029.33 : x
  2. Step 2: Convert to fraction form
    13,131.25/18,119.50 = 8,029.33/x
  3. Step 3: Cross multiply
    13,131.25x = 18,119.50 × 8,029.33
  4. Step 4: Simplify right side
    13,131.25x = 145,487,444.94
  5. Step 5: Solve for x
    x = 145,487,444.94/13,131.25
  6. Step 6: Final answer
    x = 11,079.48

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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.