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Finding the Fourth Proportional to 17,090.80, 25,612.20 and 13,586.80

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Solution

The fourth proportional to 17,090.80, 25,612.20 and 13,586.80 is: 20,361.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,090.80 : 25,612.20 = 13,586.80 : x
  2. Step 2: Convert to fraction form
    17,090.80/25,612.20 = 13,586.80/x
  3. Step 3: Cross multiply
    17,090.80x = 25,612.20 × 13,586.80
  4. Step 4: Simplify right side
    17,090.80x = 347,987,838.96
  5. Step 5: Solve for x
    x = 347,987,838.96/17,090.80
  6. Step 6: Final answer
    x = 20,361.12

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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.