Home / 21,268.74-31,896.63-7,414.50

Finding the Fourth Proportional to 21,268.74, 31,896.63 and 7,414.50

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Solution

The fourth proportional to 21,268.74, 31,896.63 and 7,414.50 is: 11,119.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,268.74 : 31,896.63 = 7,414.50 : x
  2. Step 2: Convert to fraction form
    21,268.74/31,896.63 = 7,414.50/x
  3. Step 3: Cross multiply
    21,268.74x = 31,896.63 × 7,414.50
  4. Step 4: Simplify right side
    21,268.74x = 236,497,563.14
  5. Step 5: Solve for x
    x = 236,497,563.14/21,268.74
  6. Step 6: Final answer
    x = 11,119.49

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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.