Home / 18,968.97-28,431.27-14,273.91

Finding the Fourth Proportional to 18,968.97, 28,431.27 and 14,273.91

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Solution

The fourth proportional to 18,968.97, 28,431.27 and 14,273.91 is: 21,394.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,968.97 : 28,431.27 = 14,273.91 : x
  2. Step 2: Convert to fraction form
    18,968.97/28,431.27 = 14,273.91/x
  3. Step 3: Cross multiply
    18,968.97x = 28,431.27 × 14,273.91
  4. Step 4: Simplify right side
    18,968.97x = 405,825,389.17
  5. Step 5: Solve for x
    x = 405,825,389.17/18,968.97
  6. Step 6: Final answer
    x = 21,394.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.