Home / 28,730.20-43,095.30-18,880.60

Finding the Fourth Proportional to 28,730.20, 43,095.30 and 18,880.60

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Solution

The fourth proportional to 28,730.20, 43,095.30 and 18,880.60 is: 28,320.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,730.20 : 43,095.30 = 18,880.60 : x
  2. Step 2: Convert to fraction form
    28,730.20/43,095.30 = 18,880.60/x
  3. Step 3: Cross multiply
    28,730.20x = 43,095.30 × 18,880.60
  4. Step 4: Simplify right side
    28,730.20x = 813,665,121.18
  5. Step 5: Solve for x
    x = 813,665,121.18/28,730.20
  6. Step 6: Final answer
    x = 28,320.90

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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.