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Finding the Fourth Proportional to 18,601.80, 27,905.40 and 8,741.40

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Solution

The fourth proportional to 18,601.80, 27,905.40 and 8,741.40 is: 13,113.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,601.80 : 27,905.40 = 8,741.40 : x
  2. Step 2: Convert to fraction form
    18,601.80/27,905.40 = 8,741.40/x
  3. Step 3: Cross multiply
    18,601.80x = 27,905.40 × 8,741.40
  4. Step 4: Simplify right side
    18,601.80x = 243,932,263.56
  5. Step 5: Solve for x
    x = 243,932,263.56/18,601.80
  6. Step 6: Final answer
    x = 13,113.37

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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.