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Finding the Fourth Proportional to 18,724,993.92, 28,079,515.44 and 7,357,468.68

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Solution

The fourth proportional to 18,724,993.92, 28,079,515.44 and 7,357,468.68 is: 11,033,069.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,724,993.92 : 28,079,515.44 = 7,357,468.68 : x
  2. Step 2: Convert to fraction form
    18,724,993.92/28,079,515.44 = 7,357,468.68/x
  3. Step 3: Cross multiply
    18,724,993.92x = 28,079,515.44 × 7,357,468.68
  4. Step 4: Simplify right side
    18,724,993.92x = 206,594,155,399,376.41
  5. Step 5: Solve for x
    x = 206,594,155,399,376.41/18,724,993.92
  6. Step 6: Final answer
    x = 11,033,069.29

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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.