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Finding the Third Proportional to 7,911 and 14,647.50

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Solution

The third proportional to 7,911 and 14,647.50 is: 27,120.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,911 : 14,647.50 = 14,647.50 : x
  2. Step 2: Convert to fraction form
    7,911/14,647.50 = 14,647.50/x
  3. Step 3: Cross multiply
    7,911x = 14,647.50 × 14,647.50
  4. Step 4: Simplify right side
    7,911x = 214,549,256.25
  5. Step 5: Solve for x
    x = 214,549,256.25/7,911
  6. Step 6: Final answer
    x = 27,120.37

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Why These Related Problems?

These problems maintain the same ratio (1.85) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.