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Finding the Fourth Proportional to 18,581.06, 27,858.74 and 7,484.67

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Solution

The fourth proportional to 18,581.06, 27,858.74 and 7,484.67 is: 11,221.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,581.06 : 27,858.74 = 7,484.67 : x
  2. Step 2: Convert to fraction form
    18,581.06/27,858.74 = 7,484.67/x
  3. Step 3: Cross multiply
    18,581.06x = 27,858.74 × 7,484.67
  4. Step 4: Simplify right side
    18,581.06x = 208,513,438.09
  5. Step 5: Solve for x
    x = 208,513,438.09/18,581.06
  6. Step 6: Final answer
    x = 11,221.83

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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.