Home / 28,388.21-39,175.80-17,057.90

Finding the Fourth Proportional to 28,388.21, 39,175.80 and 17,057.90

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Solution

The fourth proportional to 28,388.21, 39,175.80 and 17,057.90 is: 23,539.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,388.21 : 39,175.80 = 17,057.90 : x
  2. Step 2: Convert to fraction form
    28,388.21/39,175.80 = 17,057.90/x
  3. Step 3: Cross multiply
    28,388.21x = 39,175.80 × 17,057.90
  4. Step 4: Simplify right side
    28,388.21x = 668,256,716.21
  5. Step 5: Solve for x
    x = 668,256,716.21/28,388.21
  6. Step 6: Final answer
    x = 23,539.94

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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.