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Finding the Fourth Proportional to 18,605.70, 27,912.60 and 6,123.60

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Solution

The fourth proportional to 18,605.70, 27,912.60 and 6,123.60 is: 9,186.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,605.70 : 27,912.60 = 6,123.60 : x
  2. Step 2: Convert to fraction form
    18,605.70/27,912.60 = 6,123.60/x
  3. Step 3: Cross multiply
    18,605.70x = 27,912.60 × 6,123.60
  4. Step 4: Simplify right side
    18,605.70x = 170,925,597.36
  5. Step 5: Solve for x
    x = 170,925,597.36/18,605.70
  6. Step 6: Final answer
    x = 9,186.73

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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.