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Finding the Fourth Proportional to 18,507.08, 27,755.40 and 6,659.12

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Solution

The fourth proportional to 18,507.08, 27,755.40 and 6,659.12 is: 9,986.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,507.08 : 27,755.40 = 6,659.12 : x
  2. Step 2: Convert to fraction form
    18,507.08/27,755.40 = 6,659.12/x
  3. Step 3: Cross multiply
    18,507.08x = 27,755.40 × 6,659.12
  4. Step 4: Simplify right side
    18,507.08x = 184,826,539.25
  5. Step 5: Solve for x
    x = 184,826,539.25/18,507.08
  6. Step 6: Final answer
    x = 9,986.80

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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.