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Finding the Fourth Proportional to 18,697.92, 28,046.73 and 4,657.83

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Solution

The fourth proportional to 18,697.92, 28,046.73 and 4,657.83 is: 6,986.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,697.92 : 28,046.73 = 4,657.83 : x
  2. Step 2: Convert to fraction form
    18,697.92/28,046.73 = 4,657.83/x
  3. Step 3: Cross multiply
    18,697.92x = 28,046.73 × 4,657.83
  4. Step 4: Simplify right side
    18,697.92x = 130,636,900.40
  5. Step 5: Solve for x
    x = 130,636,900.40/18,697.92
  6. Step 6: Final answer
    x = 6,986.71

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1.5x scale

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.