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Finding the Fourth Proportional to 18,551.14, 27,830.19 and 7,458.67

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Solution

The fourth proportional to 18,551.14, 27,830.19 and 7,458.67 is: 11,189.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,551.14 : 27,830.19 = 7,458.67 : x
  2. Step 2: Convert to fraction form
    18,551.14/27,830.19 = 7,458.67/x
  3. Step 3: Cross multiply
    18,551.14x = 27,830.19 × 7,458.67
  4. Step 4: Simplify right side
    18,551.14x = 207,576,203.25
  5. Step 5: Solve for x
    x = 207,576,203.25/18,551.14
  6. Step 6: Final answer
    x = 11,189.40

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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.