Home / 20,898.24-28,839.57-11,945.94

Finding the Fourth Proportional to 20,898.24, 28,839.57 and 11,945.94

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Solution

The fourth proportional to 20,898.24, 28,839.57 and 11,945.94 is: 16,485.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,898.24 : 28,839.57 = 11,945.94 : x
  2. Step 2: Convert to fraction form
    20,898.24/28,839.57 = 11,945.94/x
  3. Step 3: Cross multiply
    20,898.24x = 28,839.57 × 11,945.94
  4. Step 4: Simplify right side
    20,898.24x = 344,515,763.57
  5. Step 5: Solve for x
    x = 344,515,763.57/20,898.24
  6. Step 6: Final answer
    x = 16,485.39

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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.