Home / 28,265.90-39,007.37-20,201.54

Finding the Fourth Proportional to 28,265.90, 39,007.37 and 20,201.54

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Solution

The fourth proportional to 28,265.90, 39,007.37 and 20,201.54 is: 27,878.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,265.90 : 39,007.37 = 20,201.54 : x
  2. Step 2: Convert to fraction form
    28,265.90/39,007.37 = 20,201.54/x
  3. Step 3: Cross multiply
    28,265.90x = 39,007.37 × 20,201.54
  4. Step 4: Simplify right side
    28,265.90x = 788,008,800.82
  5. Step 5: Solve for x
    x = 788,008,800.82/28,265.90
  6. Step 6: Final answer
    x = 27,878.43

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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.