Home / 13,679.07-18,876.82-8,013.12

Finding the Fourth Proportional to 13,679.07, 18,876.82 and 8,013.12

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Solution

The fourth proportional to 13,679.07, 18,876.82 and 8,013.12 is: 11,057.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,679.07 : 18,876.82 = 8,013.12 : x
  2. Step 2: Convert to fraction form
    13,679.07/18,876.82 = 8,013.12/x
  3. Step 3: Cross multiply
    13,679.07x = 18,876.82 × 8,013.12
  4. Step 4: Simplify right side
    13,679.07x = 151,262,223.88
  5. Step 5: Solve for x
    x = 151,262,223.88/13,679.07
  6. Step 6: Final answer
    x = 11,057.93

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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.