Home / 28,338.75-39,107.49-15,763.23

Finding the Fourth Proportional to 28,338.75, 39,107.49 and 15,763.23

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Solution

The fourth proportional to 28,338.75, 39,107.49 and 15,763.23 is: 21,753.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,338.75 : 39,107.49 = 15,763.23 : x
  2. Step 2: Convert to fraction form
    28,338.75/39,107.49 = 15,763.23/x
  3. Step 3: Cross multiply
    28,338.75x = 39,107.49 × 15,763.23
  4. Step 4: Simplify right side
    28,338.75x = 616,460,359.59
  5. Step 5: Solve for x
    x = 616,460,359.59/28,338.75
  6. Step 6: Final answer
    x = 21,753.27

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Half scale
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Double scale
Find fourth proportional to 28,339.75, 39,108.87 and 15,764.23
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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.