Home / 20,801.36-28,698.75-11,845.59

Finding the Fourth Proportional to 20,801.36, 28,698.75 and 11,845.59

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Solution

The fourth proportional to 20,801.36, 28,698.75 and 11,845.59 is: 16,342.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,801.36 : 28,698.75 = 11,845.59 : x
  2. Step 2: Convert to fraction form
    20,801.36/28,698.75 = 11,845.59/x
  3. Step 3: Cross multiply
    20,801.36x = 28,698.75 × 11,845.59
  4. Step 4: Simplify right side
    20,801.36x = 339,953,626.01
  5. Step 5: Solve for x
    x = 339,953,626.01/20,801.36
  6. Step 6: Final answer
    x = 16,342.86

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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.