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Finding the Third Proportional to 15,804.75 and 21,208.13

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Solution

The third proportional to 15,804.75 and 21,208.13 is: 28,458.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,804.75 : 21,208.13 = 21,208.13 : x
  2. Step 2: Convert to fraction form
    15,804.75/21,208.13 = 21,208.13/x
  3. Step 3: Cross multiply
    15,804.75x = 21,208.13 × 21,208.13
  4. Step 4: Simplify right side
    15,804.75x = 449,784,566.02
  5. Step 5: Solve for x
    x = 449,784,566.02/15,804.75
  6. Step 6: Final answer
    x = 28,458.82

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Why These Related Problems?

These problems maintain the same ratio (1.34) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.