Home / 13,945.81-19,245.20-7,658.18

Finding the Fourth Proportional to 13,945.81, 19,245.20 and 7,658.18

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Solution

The fourth proportional to 13,945.81, 19,245.20 and 7,658.18 is: 10,568.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,945.81 : 19,245.20 = 7,658.18 : x
  2. Step 2: Convert to fraction form
    13,945.81/19,245.20 = 7,658.18/x
  3. Step 3: Cross multiply
    13,945.81x = 19,245.20 × 7,658.18
  4. Step 4: Simplify right side
    13,945.81x = 147,383,219.05
  5. Step 5: Solve for x
    x = 147,383,219.05/13,945.81
  6. Step 6: Final answer
    x = 10,568.28

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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.