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Finding the Third Proportional to 7,421.63 and 10,889.44

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Solution

The third proportional to 7,421.63 and 10,889.44 is: 15,977.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,421.63 : 10,889.44 = 10,889.44 : x
  2. Step 2: Convert to fraction form
    7,421.63/10,889.44 = 10,889.44/x
  3. Step 3: Cross multiply
    7,421.63x = 10,889.44 × 10,889.44
  4. Step 4: Simplify right side
    7,421.63x = 118,579,849.07
  5. Step 5: Solve for x
    x = 118,579,849.07/7,421.63
  6. Step 6: Final answer
    x = 15,977.61

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.