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Finding the Fourth Proportional to 18,537.60, 27,803.70 and 5,388.60

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Solution

The fourth proportional to 18,537.60, 27,803.70 and 5,388.60 is: 8,082.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,537.60 : 27,803.70 = 5,388.60 : x
  2. Step 2: Convert to fraction form
    18,537.60/27,803.70 = 5,388.60/x
  3. Step 3: Cross multiply
    18,537.60x = 27,803.70 × 5,388.60
  4. Step 4: Simplify right side
    18,537.60x = 149,823,017.82
  5. Step 5: Solve for x
    x = 149,823,017.82/18,537.60
  6. Step 6: Final answer
    x = 8,082.12

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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.