Home / 13,131.75-18,120.19-8,029.83

Finding the Fourth Proportional to 13,131.75, 18,120.19 and 8,029.83

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Solution

The fourth proportional to 13,131.75, 18,120.19 and 8,029.83 is: 11,080.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,131.75 : 18,120.19 = 8,029.83 : x
  2. Step 2: Convert to fraction form
    13,131.75/18,120.19 = 8,029.83/x
  3. Step 3: Cross multiply
    13,131.75x = 18,120.19 × 8,029.83
  4. Step 4: Simplify right side
    13,131.75x = 145,502,045.27
  5. Step 5: Solve for x
    x = 145,502,045.27/13,131.75
  6. Step 6: Final answer
    x = 11,080.17

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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.