Home / 13,912.18-19,198.60-7,538.62

Finding the Fourth Proportional to 13,912.18, 19,198.60 and 7,538.62

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Solution

The fourth proportional to 13,912.18, 19,198.60 and 7,538.62 is: 10,403.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,912.18 : 19,198.60 = 7,538.62 : x
  2. Step 2: Convert to fraction form
    13,912.18/19,198.60 = 7,538.62/x
  3. Step 3: Cross multiply
    13,912.18x = 19,198.60 × 7,538.62
  4. Step 4: Simplify right side
    13,912.18x = 144,730,961.49
  5. Step 5: Solve for x
    x = 144,730,961.49/13,912.18
  6. Step 6: Final answer
    x = 10,403.18

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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.