Home / 28,696.14-39,589.56-21,160.35

Finding the Fourth Proportional to 28,696.14, 39,589.56 and 21,160.35

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Solution

The fourth proportional to 28,696.14, 39,589.56 and 21,160.35 is: 29,193.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,696.14 : 39,589.56 = 21,160.35 : x
  2. Step 2: Convert to fraction form
    28,696.14/39,589.56 = 21,160.35/x
  3. Step 3: Cross multiply
    28,696.14x = 39,589.56 × 21,160.35
  4. Step 4: Simplify right side
    28,696.14x = 837,728,945.95
  5. Step 5: Solve for x
    x = 837,728,945.95/28,696.14
  6. Step 6: Final answer
    x = 29,193.09

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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.