Home / 20,220.94-27,897.31-12,260.26

Finding the Fourth Proportional to 20,220.94, 27,897.31 and 12,260.26

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Solution

The fourth proportional to 20,220.94, 27,897.31 and 12,260.26 is: 16,914.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,220.94 : 27,897.31 = 12,260.26 : x
  2. Step 2: Convert to fraction form
    20,220.94/27,897.31 = 12,260.26/x
  3. Step 3: Cross multiply
    20,220.94x = 27,897.31 × 12,260.26
  4. Step 4: Simplify right side
    20,220.94x = 342,028,324.10
  5. Step 5: Solve for x
    x = 342,028,324.10/20,220.94
  6. Step 6: Final answer
    x = 16,914.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.