Home / 13,108.50-18,084.60-8,634.60

Finding the Fourth Proportional to 13,108.50, 18,084.60 and 8,634.60

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Solution

The fourth proportional to 13,108.50, 18,084.60 and 8,634.60 is: 11,912.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,108.50 : 18,084.60 = 8,634.60 : x
  2. Step 2: Convert to fraction form
    13,108.50/18,084.60 = 8,634.60/x
  3. Step 3: Cross multiply
    13,108.50x = 18,084.60 × 8,634.60
  4. Step 4: Simplify right side
    13,108.50x = 156,153,287.16
  5. Step 5: Solve for x
    x = 156,153,287.16/13,108.50
  6. Step 6: Final answer
    x = 11,912.37

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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.