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Finding the Fourth Proportional to 18,951.06, 28,426.47 and 4,911.06

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Solution

The fourth proportional to 18,951.06, 28,426.47 and 4,911.06 is: 7,366.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,951.06 : 28,426.47 = 4,911.06 : x
  2. Step 2: Convert to fraction form
    18,951.06/28,426.47 = 4,911.06/x
  3. Step 3: Cross multiply
    18,951.06x = 28,426.47 × 4,911.06
  4. Step 4: Simplify right side
    18,951.06x = 139,604,099.76
  5. Step 5: Solve for x
    x = 139,604,099.76/18,951.06
  6. Step 6: Final answer
    x = 7,366.56

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.