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Finding the Fourth Proportional to 19,271.30, 28,898.79 and 6,788.30

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Solution

The fourth proportional to 19,271.30, 28,898.79 and 6,788.30 is: 10,179.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,271.30 : 28,898.79 = 6,788.30 : x
  2. Step 2: Convert to fraction form
    19,271.30/28,898.79 = 6,788.30/x
  3. Step 3: Cross multiply
    19,271.30x = 28,898.79 × 6,788.30
  4. Step 4: Simplify right side
    19,271.30x = 196,173,511.66
  5. Step 5: Solve for x
    x = 196,173,511.66/19,271.30
  6. Step 6: Final answer
    x = 10,179.57

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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.