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Finding the Fourth Proportional to 18,903.14, 28,353.56 and 8,370.09

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Solution

The fourth proportional to 18,903.14, 28,353.56 and 8,370.09 is: 12,554.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,903.14 : 28,353.56 = 8,370.09 : x
  2. Step 2: Convert to fraction form
    18,903.14/28,353.56 = 8,370.09/x
  3. Step 3: Cross multiply
    18,903.14x = 28,353.56 × 8,370.09
  4. Step 4: Simplify right side
    18,903.14x = 237,321,849.02
  5. Step 5: Solve for x
    x = 237,321,849.02/18,903.14
  6. Step 6: Final answer
    x = 12,554.63

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1.5x scale

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.