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Finding the Fourth Proportional to 21,757.56, 30,027.56 and 12,199.08

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Solution

The fourth proportional to 21,757.56, 30,027.56 and 12,199.08 is: 16,835.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,757.56 : 30,027.56 = 12,199.08 : x
  2. Step 2: Convert to fraction form
    21,757.56/30,027.56 = 12,199.08/x
  3. Step 3: Cross multiply
    21,757.56x = 30,027.56 × 12,199.08
  4. Step 4: Simplify right side
    21,757.56x = 366,308,606.64
  5. Step 5: Solve for x
    x = 366,308,606.64/21,757.56
  6. Step 6: Final answer
    x = 16,835.92

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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.