Home / 13,677.38-18,874.79-7,389.75

Finding the Fourth Proportional to 13,677.38, 18,874.79 and 7,389.75

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Solution

The fourth proportional to 13,677.38, 18,874.79 and 7,389.75 is: 10,197.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,677.38 : 18,874.79 = 7,389.75 : x
  2. Step 2: Convert to fraction form
    13,677.38/18,874.79 = 7,389.75/x
  3. Step 3: Cross multiply
    13,677.38x = 18,874.79 × 7,389.75
  4. Step 4: Simplify right side
    13,677.38x = 139,479,942.45
  5. Step 5: Solve for x
    x = 139,479,942.45/13,677.38
  6. Step 6: Final answer
    x = 10,197.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.