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Finding the Fourth Proportional to 17,230.80, 23,781.60 and 10,156.80

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Solution

The fourth proportional to 17,230.80, 23,781.60 and 10,156.80 is: 14,018.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,230.80 : 23,781.60 = 10,156.80 : x
  2. Step 2: Convert to fraction form
    17,230.80/23,781.60 = 10,156.80/x
  3. Step 3: Cross multiply
    17,230.80x = 23,781.60 × 10,156.80
  4. Step 4: Simplify right side
    17,230.80x = 241,544,954.88
  5. Step 5: Solve for x
    x = 241,544,954.88/17,230.80
  6. Step 6: Final answer
    x = 14,018.21

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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.