Home / 13,489.75-18,617.23-8,113.91

Finding the Fourth Proportional to 13,489.75, 18,617.23 and 8,113.91

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Solution

The fourth proportional to 13,489.75, 18,617.23 and 8,113.91 is: 11,198.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,489.75 : 18,617.23 = 8,113.91 : x
  2. Step 2: Convert to fraction form
    13,489.75/18,617.23 = 8,113.91/x
  3. Step 3: Cross multiply
    13,489.75x = 18,617.23 × 8,113.91
  4. Step 4: Simplify right side
    13,489.75x = 151,058,573.27
  5. Step 5: Solve for x
    x = 151,058,573.27/13,489.75
  6. Step 6: Final answer
    x = 11,198.03

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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.