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Finding the Fourth Proportional to 18,764.70, 28,138.95 and 9,401.10

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Solution

The fourth proportional to 18,764.70, 28,138.95 and 9,401.10 is: 14,097.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,764.70 : 28,138.95 = 9,401.10 : x
  2. Step 2: Convert to fraction form
    18,764.70/28,138.95 = 9,401.10/x
  3. Step 3: Cross multiply
    18,764.70x = 28,138.95 × 9,401.10
  4. Step 4: Simplify right side
    18,764.70x = 264,537,082.85
  5. Step 5: Solve for x
    x = 264,537,082.85/18,764.70
  6. Step 6: Final answer
    x = 14,097.59

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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.