Home / 13,659.69-18,791.11-11,136.27

Finding the Fourth Proportional to 13,659.69, 18,791.11 and 11,136.27

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Solution

The fourth proportional to 13,659.69, 18,791.11 and 11,136.27 is: 15,319.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,659.69 : 18,791.11 = 11,136.27 : x
  2. Step 2: Convert to fraction form
    13,659.69/18,791.11 = 11,136.27/x
  3. Step 3: Cross multiply
    13,659.69x = 18,791.11 × 11,136.27
  4. Step 4: Simplify right side
    13,659.69x = 209,262,963.84
  5. Step 5: Solve for x
    x = 209,262,963.84/13,659.69
  6. Step 6: Final answer
    x = 15,319.74

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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.