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Finding the Fourth Proportional to 28,960.80, 43,441.20 and 8,184.30

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Solution

The fourth proportional to 28,960.80, 43,441.20 and 8,184.30 is: 12,276.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,960.80 : 43,441.20 = 8,184.30 : x
  2. Step 2: Convert to fraction form
    28,960.80/43,441.20 = 8,184.30/x
  3. Step 3: Cross multiply
    28,960.80x = 43,441.20 × 8,184.30
  4. Step 4: Simplify right side
    28,960.80x = 355,535,813.16
  5. Step 5: Solve for x
    x = 355,535,813.16/28,960.80
  6. Step 6: Final answer
    x = 12,276.45

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.