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Finding the Fourth Proportional to 12,089.37, 18,134.03 and 6,821.99

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Solution

The fourth proportional to 12,089.37, 18,134.03 and 6,821.99 is: 10,232.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,089.37 : 18,134.03 = 6,821.99 : x
  2. Step 2: Convert to fraction form
    12,089.37/18,134.03 = 6,821.99/x
  3. Step 3: Cross multiply
    12,089.37x = 18,134.03 × 6,821.99
  4. Step 4: Simplify right side
    12,089.37x = 123,710,171.32
  5. Step 5: Solve for x
    x = 123,710,171.32/12,089.37
  6. Step 6: Final answer
    x = 10,232.97

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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.