Home / 13,721.81-18,926.36-11,616.82

Finding the Fourth Proportional to 13,721.81, 18,926.36 and 11,616.82

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Solution

The fourth proportional to 13,721.81, 18,926.36 and 11,616.82 is: 16,022.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,721.81 : 18,926.36 = 11,616.82 : x
  2. Step 2: Convert to fraction form
    13,721.81/18,926.36 = 11,616.82/x
  3. Step 3: Cross multiply
    13,721.81x = 18,926.36 × 11,616.82
  4. Step 4: Simplify right side
    13,721.81x = 219,864,055.54
  5. Step 5: Solve for x
    x = 219,864,055.54/13,721.81
  6. Step 6: Final answer
    x = 16,022.97

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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.