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Finding the Fourth Proportional to 13,889.58, 20,849.01 and 13,576.14

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Solution

The fourth proportional to 13,889.58, 20,849.01 and 13,576.14 is: 20,378.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,889.58 : 20,849.01 = 13,576.14 : x
  2. Step 2: Convert to fraction form
    13,889.58/20,849.01 = 13,576.14/x
  3. Step 3: Cross multiply
    13,889.58x = 20,849.01 × 13,576.14
  4. Step 4: Simplify right side
    13,889.58x = 283,049,078.62
  5. Step 5: Solve for x
    x = 283,049,078.62/13,889.58
  6. Step 6: Final answer
    x = 20,378.52

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1.5x scale

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.