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Finding the Third Proportional to 7,575 and 12,406.50

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Solution

The third proportional to 7,575 and 12,406.50 is: 20,319.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,575 : 12,406.50 = 12,406.50 : x
  2. Step 2: Convert to fraction form
    7,575/12,406.50 = 12,406.50/x
  3. Step 3: Cross multiply
    7,575x = 12,406.50 × 12,406.50
  4. Step 4: Simplify right side
    7,575x = 153,921,242.25
  5. Step 5: Solve for x
    x = 153,921,242.25/7,575
  6. Step 6: Final answer
    x = 20,319.64

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Why These Related Problems?

These problems maintain the same ratio (1.64) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.