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Finding the Fourth Proportional to 18,900, 28,349.46 and 5,750.46

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Solution

The fourth proportional to 18,900, 28,349.46 and 5,750.46 is: 8,625.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,900 : 28,349.46 = 5,750.46 : x
  2. Step 2: Convert to fraction form
    18,900/28,349.46 = 5,750.46/x
  3. Step 3: Cross multiply
    18,900x = 28,349.46 × 5,750.46
  4. Step 4: Simplify right side
    18,900x = 163,022,435.75
  5. Step 5: Solve for x
    x = 163,022,435.75/18,900
  6. Step 6: Final answer
    x = 8,625.53

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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.