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Finding the Fourth Proportional to 28,990.94, 43,494.10 and 9,269.86

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Solution

The fourth proportional to 28,990.94, 43,494.10 and 9,269.86 is: 13,907.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,990.94 : 43,494.10 = 9,269.86 : x
  2. Step 2: Convert to fraction form
    28,990.94/43,494.10 = 9,269.86/x
  3. Step 3: Cross multiply
    28,990.94x = 43,494.10 × 9,269.86
  4. Step 4: Simplify right side
    28,990.94x = 403,184,217.83
  5. Step 5: Solve for x
    x = 403,184,217.83/28,990.94
  6. Step 6: Final answer
    x = 13,907.25

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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.