Home / 27,986.40-41,979.60-21,644.10

Finding the Fourth Proportional to 27,986.40, 41,979.60 and 21,644.10

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Solution

The fourth proportional to 27,986.40, 41,979.60 and 21,644.10 is: 32,466.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,986.40 : 41,979.60 = 21,644.10 : x
  2. Step 2: Convert to fraction form
    27,986.40/41,979.60 = 21,644.10/x
  3. Step 3: Cross multiply
    27,986.40x = 41,979.60 × 21,644.10
  4. Step 4: Simplify right side
    27,986.40x = 908,610,660.36
  5. Step 5: Solve for x
    x = 908,610,660.36/27,986.40
  6. Step 6: Final answer
    x = 32,466.15

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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.