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Finding the Fourth Proportional to 18,601.80, 25,640.46 and 14,616.60

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Solution

The fourth proportional to 18,601.80, 25,640.46 and 14,616.60 is: 20,147.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,601.80 : 25,640.46 = 14,616.60 : x
  2. Step 2: Convert to fraction form
    18,601.80/25,640.46 = 14,616.60/x
  3. Step 3: Cross multiply
    18,601.80x = 25,640.46 × 14,616.60
  4. Step 4: Simplify right side
    18,601.80x = 374,776,347.64
  5. Step 5: Solve for x
    x = 374,776,347.64/18,601.80
  6. Step 6: Final answer
    x = 20,147.32

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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.