Home / 13,755.36-18,986.91-8,089.86

Finding the Fourth Proportional to 13,755.36, 18,986.91 and 8,089.86

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Solution

The fourth proportional to 13,755.36, 18,986.91 and 8,089.86 is: 11,166.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,755.36 : 18,986.91 = 8,089.86 : x
  2. Step 2: Convert to fraction form
    13,755.36/18,986.91 = 8,089.86/x
  3. Step 3: Cross multiply
    13,755.36x = 18,986.91 × 8,089.86
  4. Step 4: Simplify right side
    13,755.36x = 153,601,443.73
  5. Step 5: Solve for x
    x = 153,601,443.73/13,755.36
  6. Step 6: Final answer
    x = 11,166.66

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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.