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Finding the Fourth Proportional to 17,135.60, 25,703.40 and 7,919.60

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Solution

The fourth proportional to 17,135.60, 25,703.40 and 7,919.60 is: 11,879.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,135.60 : 25,703.40 = 7,919.60 : x
  2. Step 2: Convert to fraction form
    17,135.60/25,703.40 = 7,919.60/x
  3. Step 3: Cross multiply
    17,135.60x = 25,703.40 × 7,919.60
  4. Step 4: Simplify right side
    17,135.60x = 203,560,646.64
  5. Step 5: Solve for x
    x = 203,560,646.64/17,135.60
  6. Step 6: Final answer
    x = 11,879.40

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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.