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Finding the Fourth Proportional to 17,919.80, 26,847.48 and 16,865.60

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Solution

The fourth proportional to 17,919.80, 26,847.48 and 16,865.60 is: 25,268.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,919.80 : 26,847.48 = 16,865.60 : x
  2. Step 2: Convert to fraction form
    17,919.80/26,847.48 = 16,865.60/x
  3. Step 3: Cross multiply
    17,919.80x = 26,847.48 × 16,865.60
  4. Step 4: Simplify right side
    17,919.80x = 452,798,858.69
  5. Step 5: Solve for x
    x = 452,798,858.69/17,919.80
  6. Step 6: Final answer
    x = 25,268.08

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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.