Home / 13,900.78-19,183.10-7,527.44

Finding the Fourth Proportional to 13,900.78, 19,183.10 and 7,527.44

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Solution

The fourth proportional to 13,900.78, 19,183.10 and 7,527.44 is: 10,387.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,900.78 : 19,183.10 = 7,527.44 : x
  2. Step 2: Convert to fraction form
    13,900.78/19,183.10 = 7,527.44/x
  3. Step 3: Cross multiply
    13,900.78x = 19,183.10 × 7,527.44
  4. Step 4: Simplify right side
    13,900.78x = 144,399,634.26
  5. Step 5: Solve for x
    x = 144,399,634.26/13,900.78
  6. Step 6: Final answer
    x = 10,387.88

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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.