Home / 28,537.74-39,383.24-15,790.70

Finding the Fourth Proportional to 28,537.74, 39,383.24 and 15,790.70

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Solution

The fourth proportional to 28,537.74, 39,383.24 and 15,790.70 is: 21,791.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,537.74 : 39,383.24 = 15,790.70 : x
  2. Step 2: Convert to fraction form
    28,537.74/39,383.24 = 15,790.70/x
  3. Step 3: Cross multiply
    28,537.74x = 39,383.24 × 15,790.70
  4. Step 4: Simplify right side
    28,537.74x = 621,888,927.87
  5. Step 5: Solve for x
    x = 621,888,927.87/28,537.74
  6. Step 6: Final answer
    x = 21,791.81

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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.