Home / 28,678.26-39,578.68-17,350.54

Finding the Fourth Proportional to 28,678.26, 39,578.68 and 17,350.54

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Solution

The fourth proportional to 28,678.26, 39,578.68 and 17,350.54 is: 23,945.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,678.26 : 39,578.68 = 17,350.54 : x
  2. Step 2: Convert to fraction form
    28,678.26/39,578.68 = 17,350.54/x
  3. Step 3: Cross multiply
    28,678.26x = 39,578.68 × 17,350.54
  4. Step 4: Simplify right side
    28,678.26x = 686,711,490.05
  5. Step 5: Solve for x
    x = 686,711,490.05/28,678.26
  6. Step 6: Final answer
    x = 23,945.37

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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.