Home / 28,163.43-38,864.39-16,839.23

Finding the Fourth Proportional to 28,163.43, 38,864.39 and 16,839.23

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Solution

The fourth proportional to 28,163.43, 38,864.39 and 16,839.23 is: 23,237.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,163.43 : 38,864.39 = 16,839.23 : x
  2. Step 2: Convert to fraction form
    28,163.43/38,864.39 = 16,839.23/x
  3. Step 3: Cross multiply
    28,163.43x = 38,864.39 × 16,839.23
  4. Step 4: Simplify right side
    28,163.43x = 654,446,123.50
  5. Step 5: Solve for x
    x = 654,446,123.50/28,163.43
  6. Step 6: Final answer
    x = 23,237.44

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Double scale
Find fourth proportional to 28,164.43, 38,865.76 and 16,840.23
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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.