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Finding the Fourth Proportional to 28,522.86, 42,784.86 and 8,801.38

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Solution

The fourth proportional to 28,522.86, 42,784.86 and 8,801.38 is: 13,202.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,522.86 : 42,784.86 = 8,801.38 : x
  2. Step 2: Convert to fraction form
    28,522.86/42,784.86 = 8,801.38/x
  3. Step 3: Cross multiply
    28,522.86x = 42,784.86 × 8,801.38
  4. Step 4: Simplify right side
    28,522.86x = 376,565,811.11
  5. Step 5: Solve for x
    x = 376,565,811.11/28,522.86
  6. Step 6: Final answer
    x = 13,202.25

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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.