Home / 20,221.94-27,898.69-12,261.26

Finding the Fourth Proportional to 20,221.94, 27,898.69 and 12,261.26

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Solution

The fourth proportional to 20,221.94, 27,898.69 and 12,261.26 is: 16,915.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,221.94 : 27,898.69 = 12,261.26 : x
  2. Step 2: Convert to fraction form
    20,221.94/27,898.69 = 12,261.26/x
  3. Step 3: Cross multiply
    20,221.94x = 27,898.69 × 12,261.26
  4. Step 4: Simplify right side
    20,221.94x = 342,073,091.75
  5. Step 5: Solve for x
    x = 342,073,091.75/20,221.94
  6. Step 6: Final answer
    x = 16,915.94

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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.