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Finding the Fourth Proportional to 17,109.60, 25,664.40 and 12,098.40

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Solution

The fourth proportional to 17,109.60, 25,664.40 and 12,098.40 is: 18,147.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,109.60 : 25,664.40 = 12,098.40 : x
  2. Step 2: Convert to fraction form
    17,109.60/25,664.40 = 12,098.40/x
  3. Step 3: Cross multiply
    17,109.60x = 25,664.40 × 12,098.40
  4. Step 4: Simplify right side
    17,109.60x = 310,498,176.96
  5. Step 5: Solve for x
    x = 310,498,176.96/17,109.60
  6. Step 6: Final answer
    x = 18,147.60

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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.