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Finding the Fourth Proportional to 17,110.70, 25,629.60 and 13,830.20

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Solution

The fourth proportional to 17,110.70, 25,629.60 and 13,830.20 is: 20,715.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,110.70 : 25,629.60 = 13,830.20 : x
  2. Step 2: Convert to fraction form
    17,110.70/25,629.60 = 13,830.20/x
  3. Step 3: Cross multiply
    17,110.70x = 25,629.60 × 13,830.20
  4. Step 4: Simplify right side
    17,110.70x = 354,462,493.92
  5. Step 5: Solve for x
    x = 354,462,493.92/17,110.70
  6. Step 6: Final answer
    x = 20,715.84

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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.