Home / 28,990.48-39,997.44-16,412.80

Finding the Fourth Proportional to 28,990.48, 39,997.44 and 16,412.80

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Solution

The fourth proportional to 28,990.48, 39,997.44 and 16,412.80 is: 22,644.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,990.48 : 39,997.44 = 16,412.80 : x
  2. Step 2: Convert to fraction form
    28,990.48/39,997.44 = 16,412.80/x
  3. Step 3: Cross multiply
    28,990.48x = 39,997.44 × 16,412.80
  4. Step 4: Simplify right side
    28,990.48x = 656,469,983.23
  5. Step 5: Solve for x
    x = 656,469,983.23/28,990.48
  6. Step 6: Final answer
    x = 22,644.33

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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.