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Finding the Fourth Proportional to 18,086.51, 27,129.16 and 6,995.54

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Solution

The fourth proportional to 18,086.51, 27,129.16 and 6,995.54 is: 10,493.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,086.51 : 27,129.16 = 6,995.54 : x
  2. Step 2: Convert to fraction form
    18,086.51/27,129.16 = 6,995.54/x
  3. Step 3: Cross multiply
    18,086.51x = 27,129.16 × 6,995.54
  4. Step 4: Simplify right side
    18,086.51x = 189,783,200.51
  5. Step 5: Solve for x
    x = 189,783,200.51/18,086.51
  6. Step 6: Final answer
    x = 10,493.08

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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.