Home / 19,939.57-27,512.87-11,981.93

Finding the Fourth Proportional to 19,939.57, 27,512.87 and 11,981.93

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Solution

The fourth proportional to 19,939.57, 27,512.87 and 11,981.93 is: 16,532.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,939.57 : 27,512.87 = 11,981.93 : x
  2. Step 2: Convert to fraction form
    19,939.57/27,512.87 = 11,981.93/x
  3. Step 3: Cross multiply
    19,939.57x = 27,512.87 × 11,981.93
  4. Step 4: Simplify right side
    19,939.57x = 329,657,084.97
  5. Step 5: Solve for x
    x = 329,657,084.97/19,939.57
  6. Step 6: Final answer
    x = 16,532.81

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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.