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Finding the Fourth Proportional to 17,881.40, 26,821.26 and 8,514.60

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Solution

The fourth proportional to 17,881.40, 26,821.26 and 8,514.60 is: 12,771.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,881.40 : 26,821.26 = 8,514.60 : x
  2. Step 2: Convert to fraction form
    17,881.40/26,821.26 = 8,514.60/x
  3. Step 3: Cross multiply
    17,881.40x = 26,821.26 × 8,514.60
  4. Step 4: Simplify right side
    17,881.40x = 228,372,300.40
  5. Step 5: Solve for x
    x = 228,372,300.40/17,881.40
  6. Step 6: Final answer
    x = 12,771.50

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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.