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Finding the Fourth Proportional to 28,522.86, 42,781.02 and 7,464.94

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Solution

The fourth proportional to 28,522.86, 42,781.02 and 7,464.94 is: 11,196.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,522.86 : 42,781.02 = 7,464.94 : x
  2. Step 2: Convert to fraction form
    28,522.86/42,781.02 = 7,464.94/x
  3. Step 3: Cross multiply
    28,522.86x = 42,781.02 × 7,464.94
  4. Step 4: Simplify right side
    28,522.86x = 319,357,747.44
  5. Step 5: Solve for x
    x = 319,357,747.44/28,522.86
  6. Step 6: Final answer
    x = 11,196.55

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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.