Home / 14,485.78-21,687.30-9,540.28

Finding the Fourth Proportional to 14,485.78, 21,687.30 and 9,540.28

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Solution

The fourth proportional to 14,485.78, 21,687.30 and 9,540.28 is: 14,283.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,485.78 : 21,687.30 = 9,540.28 : x
  2. Step 2: Convert to fraction form
    14,485.78/21,687.30 = 9,540.28/x
  3. Step 3: Cross multiply
    14,485.78x = 21,687.30 × 9,540.28
  4. Step 4: Simplify right side
    14,485.78x = 206,902,914.44
  5. Step 5: Solve for x
    x = 206,902,914.44/14,485.78
  6. Step 6: Final answer
    x = 14,283.17

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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.