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Finding the Fourth Proportional to 11,558, 17,339.61 and 3,660.99

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Solution

The fourth proportional to 11,558, 17,339.61 and 3,660.99 is: 5,492.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,558 : 17,339.61 = 3,660.99 : x
  2. Step 2: Convert to fraction form
    11,558/17,339.61 = 3,660.99/x
  3. Step 3: Cross multiply
    11,558x = 17,339.61 × 3,660.99
  4. Step 4: Simplify right side
    11,558x = 63,480,138.81
  5. Step 5: Solve for x
    x = 63,480,138.81/11,558
  6. Step 6: Final answer
    x = 5,492.31

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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.