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Finding the Fourth Proportional to 18,499.80, 27,749.70 and 14,563.20

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Solution

The fourth proportional to 18,499.80, 27,749.70 and 14,563.20 is: 21,844.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,499.80 : 27,749.70 = 14,563.20 : x
  2. Step 2: Convert to fraction form
    18,499.80/27,749.70 = 14,563.20/x
  3. Step 3: Cross multiply
    18,499.80x = 27,749.70 × 14,563.20
  4. Step 4: Simplify right side
    18,499.80x = 404,124,431.04
  5. Step 5: Solve for x
    x = 404,124,431.04/18,499.80
  6. Step 6: Final answer
    x = 21,844.80

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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.