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Finding the Fourth Proportional to 11,993.18, 17,966.38 and 7,301.55

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Solution

The fourth proportional to 11,993.18, 17,966.38 and 7,301.55 is: 10,938.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,993.18 : 17,966.38 = 7,301.55 : x
  2. Step 2: Convert to fraction form
    11,993.18/17,966.38 = 7,301.55/x
  3. Step 3: Cross multiply
    11,993.18x = 17,966.38 × 7,301.55
  4. Step 4: Simplify right side
    11,993.18x = 131,182,416.81
  5. Step 5: Solve for x
    x = 131,182,416.81/11,993.18
  6. Step 6: Final answer
    x = 10,938.09

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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.