Home / 27,164.89-40,739.43-10,521.21

Finding the Fourth Proportional to 27,164.89, 40,739.43 and 10,521.21

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Solution

The fourth proportional to 27,164.89, 40,739.43 and 10,521.21 is: 15,778.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,164.89 : 40,739.43 = 10,521.21 : x
  2. Step 2: Convert to fraction form
    27,164.89/40,739.43 = 10,521.21/x
  3. Step 3: Cross multiply
    27,164.89x = 40,739.43 × 10,521.21
  4. Step 4: Simplify right side
    27,164.89x = 428,628,098.31
  5. Step 5: Solve for x
    x = 428,628,098.31/27,164.89
  6. Step 6: Final answer
    x = 15,778.75

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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.