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Finding the Fourth Proportional to 28,763.53, 43,151.78 and 8,774.80

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Solution

The fourth proportional to 28,763.53, 43,151.78 and 8,774.80 is: 13,164.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,763.53 : 43,151.78 = 8,774.80 : x
  2. Step 2: Convert to fraction form
    28,763.53/43,151.78 = 8,774.80/x
  3. Step 3: Cross multiply
    28,763.53x = 43,151.78 × 8,774.80
  4. Step 4: Simplify right side
    28,763.53x = 378,648,153.20
  5. Step 5: Solve for x
    x = 378,648,153.20/28,763.53
  6. Step 6: Final answer
    x = 13,164.18

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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.