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Finding the Fourth Proportional to 17,659.58, 26,419.53 and 13,679.42

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Solution

The fourth proportional to 17,659.58, 26,419.53 and 13,679.42 is: 20,465.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,659.58 : 26,419.53 = 13,679.42 : x
  2. Step 2: Convert to fraction form
    17,659.58/26,419.53 = 13,679.42/x
  3. Step 3: Cross multiply
    17,659.58x = 26,419.53 × 13,679.42
  4. Step 4: Simplify right side
    17,659.58x = 361,403,847.07
  5. Step 5: Solve for x
    x = 361,403,847.07/17,659.58
  6. Step 6: Final answer
    x = 20,465.03

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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.