Home / 20,975.76-28,936.44-13,027.23

Finding the Fourth Proportional to 20,975.76, 28,936.44 and 13,027.23

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Solution

The fourth proportional to 20,975.76, 28,936.44 and 13,027.23 is: 17,971.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,975.76 : 28,936.44 = 13,027.23 : x
  2. Step 2: Convert to fraction form
    20,975.76/28,936.44 = 13,027.23/x
  3. Step 3: Cross multiply
    20,975.76x = 28,936.44 × 13,027.23
  4. Step 4: Simplify right side
    20,975.76x = 376,961,659.26
  5. Step 5: Solve for x
    x = 376,961,659.26/20,975.76
  6. Step 6: Final answer
    x = 17,971.30

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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.