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Finding the Fourth Proportional to 17,103.60, 25,655.40 and 15,791.40

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Solution

The fourth proportional to 17,103.60, 25,655.40 and 15,791.40 is: 23,687.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,103.60 : 25,655.40 = 15,791.40 : x
  2. Step 2: Convert to fraction form
    17,103.60/25,655.40 = 15,791.40/x
  3. Step 3: Cross multiply
    17,103.60x = 25,655.40 × 15,791.40
  4. Step 4: Simplify right side
    17,103.60x = 405,134,683.56
  5. Step 5: Solve for x
    x = 405,134,683.56/17,103.60
  6. Step 6: Final answer
    x = 23,687.10

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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.