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Finding the Fourth Proportional to 18,754.38, 28,135.98 and 9,398.34

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Solution

The fourth proportional to 18,754.38, 28,135.98 and 9,398.34 is: 14,099.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,754.38 : 28,135.98 = 9,398.34 : x
  2. Step 2: Convert to fraction form
    18,754.38/28,135.98 = 9,398.34/x
  3. Step 3: Cross multiply
    18,754.38x = 28,135.98 × 9,398.34
  4. Step 4: Simplify right side
    18,754.38x = 264,431,506.27
  5. Step 5: Solve for x
    x = 264,431,506.27/18,754.38
  6. Step 6: Final answer
    x = 14,099.72

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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.