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Finding the Fourth Proportional to 11,958.45, 17,916.90 and 8,393.01

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Solution

The fourth proportional to 11,958.45, 17,916.90 and 8,393.01 is: 12,574.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,958.45 : 17,916.90 = 8,393.01 : x
  2. Step 2: Convert to fraction form
    11,958.45/17,916.90 = 8,393.01/x
  3. Step 3: Cross multiply
    11,958.45x = 17,916.90 × 8,393.01
  4. Step 4: Simplify right side
    11,958.45x = 150,376,720.87
  5. Step 5: Solve for x
    x = 150,376,720.87/11,958.45
  6. Step 6: Final answer
    x = 12,574.93

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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.