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Finding the Fourth Proportional to 12,383.60, 17,079.84 and 8,348.94

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Solution

The fourth proportional to 12,383.60, 17,079.84 and 8,348.94 is: 11,515.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,383.60 : 17,079.84 = 8,348.94 : x
  2. Step 2: Convert to fraction form
    12,383.60/17,079.84 = 8,348.94/x
  3. Step 3: Cross multiply
    12,383.60x = 17,079.84 × 8,348.94
  4. Step 4: Simplify right side
    12,383.60x = 142,598,559.37
  5. Step 5: Solve for x
    x = 142,598,559.37/12,383.60
  6. Step 6: Final answer
    x = 11,515.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.