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Finding the Fourth Proportional to 17,420.60, 26,108.04 and 8,059.40

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Solution

The fourth proportional to 17,420.60, 26,108.04 and 8,059.40 is: 12,078.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,420.60 : 26,108.04 = 8,059.40 : x
  2. Step 2: Convert to fraction form
    17,420.60/26,108.04 = 8,059.40/x
  3. Step 3: Cross multiply
    17,420.60x = 26,108.04 × 8,059.40
  4. Step 4: Simplify right side
    17,420.60x = 210,415,137.58
  5. Step 5: Solve for x
    x = 210,415,137.58/17,420.60
  6. Step 6: Final answer
    x = 12,078.52

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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.