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Finding the Third Proportional to 19,421.25 and 28,489.50

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Solution

The third proportional to 19,421.25 and 28,489.50 is: 41,791.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,421.25 : 28,489.50 = 28,489.50 : x
  2. Step 2: Convert to fraction form
    19,421.25/28,489.50 = 28,489.50/x
  3. Step 3: Cross multiply
    19,421.25x = 28,489.50 × 28,489.50
  4. Step 4: Simplify right side
    19,421.25x = 811,651,610.25
  5. Step 5: Solve for x
    x = 811,651,610.25/19,421.25
  6. Step 6: Final answer
    x = 41,791.93

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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.