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Finding the Fourth Proportional to 20,292.78, 27,951.94 and 14,313.94

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Solution

The fourth proportional to 20,292.78, 27,951.94 and 14,313.94 is: 19,716.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,292.78 : 27,951.94 = 14,313.94 : x
  2. Step 2: Convert to fraction form
    20,292.78/27,951.94 = 14,313.94/x
  3. Step 3: Cross multiply
    20,292.78x = 27,951.94 × 14,313.94
  4. Step 4: Simplify right side
    20,292.78x = 400,102,392.04
  5. Step 5: Solve for x
    x = 400,102,392.04/20,292.78
  6. Step 6: Final answer
    x = 19,716.49

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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.