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Finding the Fourth Proportional to 18,291.52, 27,438.36 and 5,811.34

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Solution

The fourth proportional to 18,291.52, 27,438.36 and 5,811.34 is: 8,717.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,291.52 : 27,438.36 = 5,811.34 : x
  2. Step 2: Convert to fraction form
    18,291.52/27,438.36 = 5,811.34/x
  3. Step 3: Cross multiply
    18,291.52x = 27,438.36 × 5,811.34
  4. Step 4: Simplify right side
    18,291.52x = 159,453,639.00
  5. Step 5: Solve for x
    x = 159,453,639.00/18,291.52
  6. Step 6: Final answer
    x = 8,717.35

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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.