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Finding the Fourth Proportional to 13,625.70, 18,798.60 and 8,912.70

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Solution

The fourth proportional to 13,625.70, 18,798.60 and 8,912.70 is: 12,296.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,625.70 : 18,798.60 = 8,912.70 : x
  2. Step 2: Convert to fraction form
    13,625.70/18,798.60 = 8,912.70/x
  3. Step 3: Cross multiply
    13,625.70x = 18,798.60 × 8,912.70
  4. Step 4: Simplify right side
    13,625.70x = 167,546,282.22
  5. Step 5: Solve for x
    x = 167,546,282.22/13,625.70
  6. Step 6: Final answer
    x = 12,296.34

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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.