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Finding the Fourth Proportional to 28,543.35, 42,817.08 and 8,823.45

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Solution

The fourth proportional to 28,543.35, 42,817.08 and 8,823.45 is: 13,235.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,543.35 : 42,817.08 = 8,823.45 : x
  2. Step 2: Convert to fraction form
    28,543.35/42,817.08 = 8,823.45/x
  3. Step 3: Cross multiply
    28,543.35x = 42,817.08 × 8,823.45
  4. Step 4: Simplify right side
    28,543.35x = 377,794,364.53
  5. Step 5: Solve for x
    x = 377,794,364.53/28,543.35
  6. Step 6: Final answer
    x = 13,235.81

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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.