Home / 20,728.70-31,056.60-17,010.80

Finding the Fourth Proportional to 20,728.70, 31,056.60 and 17,010.80

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Solution

The fourth proportional to 20,728.70, 31,056.60 and 17,010.80 is: 25,486.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,728.70 : 31,056.60 = 17,010.80 : x
  2. Step 2: Convert to fraction form
    20,728.70/31,056.60 = 17,010.80/x
  3. Step 3: Cross multiply
    20,728.70x = 31,056.60 × 17,010.80
  4. Step 4: Simplify right side
    20,728.70x = 528,297,611.28
  5. Step 5: Solve for x
    x = 528,297,611.28/20,728.70
  6. Step 6: Final answer
    x = 25,486.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.