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Finding the Fourth Proportional to 18,829.92, 28,236 and 6,975.52

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Solution

The fourth proportional to 18,829.92, 28,236 and 6,975.52 is: 10,459.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,829.92 : 28,236 = 6,975.52 : x
  2. Step 2: Convert to fraction form
    18,829.92/28,236 = 6,975.52/x
  3. Step 3: Cross multiply
    18,829.92x = 28,236 × 6,975.52
  4. Step 4: Simplify right side
    18,829.92x = 196,960,782.72
  5. Step 5: Solve for x
    x = 196,960,782.72/18,829.92
  6. Step 6: Final answer
    x = 10,459.99

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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.