Home / 11,994.23-17,991.18-5,415.81

Finding the Fourth Proportional to 11,994.23, 17,991.18 and 5,415.81

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Solution

The fourth proportional to 11,994.23, 17,991.18 and 5,415.81 is: 8,123.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,994.23 : 17,991.18 = 5,415.81 : x
  2. Step 2: Convert to fraction form
    11,994.23/17,991.18 = 5,415.81/x
  3. Step 3: Cross multiply
    11,994.23x = 17,991.18 × 5,415.81
  4. Step 4: Simplify right side
    11,994.23x = 97,436,812.56
  5. Step 5: Solve for x
    x = 97,436,812.56/11,994.23
  6. Step 6: Final answer
    x = 8,123.64

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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.