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Finding the Fourth Proportional to 17,146.79, 25,725.40 and 8,147.72

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Solution

The fourth proportional to 17,146.79, 25,725.40 and 8,147.72 is: 12,224.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,146.79 : 25,725.40 = 8,147.72 : x
  2. Step 2: Convert to fraction form
    17,146.79/25,725.40 = 8,147.72/x
  3. Step 3: Cross multiply
    17,146.79x = 25,725.40 × 8,147.72
  4. Step 4: Simplify right side
    17,146.79x = 209,603,400.03
  5. Step 5: Solve for x
    x = 209,603,400.03/17,146.79
  6. Step 6: Final answer
    x = 12,224.06

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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.