Home / 28,537.72-39,383.22-15,790.68

Finding the Fourth Proportional to 28,537.72, 39,383.22 and 15,790.68

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Solution

The fourth proportional to 28,537.72, 39,383.22 and 15,790.68 is: 21,791.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,537.72 : 39,383.22 = 15,790.68 : x
  2. Step 2: Convert to fraction form
    28,537.72/39,383.22 = 15,790.68/x
  3. Step 3: Cross multiply
    28,537.72x = 39,383.22 × 15,790.68
  4. Step 4: Simplify right side
    28,537.72x = 621,887,824.39
  5. Step 5: Solve for x
    x = 621,887,824.39/28,537.72
  6. Step 6: Final answer
    x = 21,791.78

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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.