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Finding the Fourth Proportional to 18,854, 28,268.52 and 8,994.80

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Solution

The fourth proportional to 18,854, 28,268.52 and 8,994.80 is: 13,486.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,854 : 28,268.52 = 8,994.80 : x
  2. Step 2: Convert to fraction form
    18,854/28,268.52 = 8,994.80/x
  3. Step 3: Cross multiply
    18,854x = 28,268.52 × 8,994.80
  4. Step 4: Simplify right side
    18,854x = 254,269,683.70
  5. Step 5: Solve for x
    x = 254,269,683.70/18,854
  6. Step 6: Final answer
    x = 13,486.25

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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.