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Finding the Fourth Proportional to 18,802.86, 28,205.37 and 4,951.50

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Solution

The fourth proportional to 18,802.86, 28,205.37 and 4,951.50 is: 7,427.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,802.86 : 28,205.37 = 4,951.50 : x
  2. Step 2: Convert to fraction form
    18,802.86/28,205.37 = 4,951.50/x
  3. Step 3: Cross multiply
    18,802.86x = 28,205.37 × 4,951.50
  4. Step 4: Simplify right side
    18,802.86x = 139,658,889.56
  5. Step 5: Solve for x
    x = 139,658,889.56/18,802.86
  6. Step 6: Final answer
    x = 7,427.53

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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.