Home / 20,157.50-27,817.68-11,083.24

Finding the Fourth Proportional to 20,157.50, 27,817.68 and 11,083.24

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Solution

The fourth proportional to 20,157.50, 27,817.68 and 11,083.24 is: 15,295.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,157.50 : 27,817.68 = 11,083.24 : x
  2. Step 2: Convert to fraction form
    20,157.50/27,817.68 = 11,083.24/x
  3. Step 3: Cross multiply
    20,157.50x = 27,817.68 × 11,083.24
  4. Step 4: Simplify right side
    20,157.50x = 308,309,968.27
  5. Step 5: Solve for x
    x = 308,309,968.27/20,157.50
  6. Step 6: Final answer
    x = 15,295.05

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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.