Home / 18,936.45-26,127.71-11,388.57

Finding the Fourth Proportional to 18,936.45, 26,127.71 and 11,388.57

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Solution

The fourth proportional to 18,936.45, 26,127.71 and 11,388.57 is: 15,713.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,936.45 : 26,127.71 = 11,388.57 : x
  2. Step 2: Convert to fraction form
    18,936.45/26,127.71 = 11,388.57/x
  3. Step 3: Cross multiply
    18,936.45x = 26,127.71 × 11,388.57
  4. Step 4: Simplify right side
    18,936.45x = 297,557,197.33
  5. Step 5: Solve for x
    x = 297,557,197.33/18,936.45
  6. Step 6: Final answer
    x = 15,713.46

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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.