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Finding the Fourth Proportional to 18,484.96, 27,729.73 and 7,238.84

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Solution

The fourth proportional to 18,484.96, 27,729.73 and 7,238.84 is: 10,859.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,484.96 : 27,729.73 = 7,238.84 : x
  2. Step 2: Convert to fraction form
    18,484.96/27,729.73 = 7,238.84/x
  3. Step 3: Cross multiply
    18,484.96x = 27,729.73 × 7,238.84
  4. Step 4: Simplify right side
    18,484.96x = 200,731,078.71
  5. Step 5: Solve for x
    x = 200,731,078.71/18,484.96
  6. Step 6: Final answer
    x = 10,859.16

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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.