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Finding the Third Proportional to 15,289.63 and 21,531.06

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Solution

The third proportional to 15,289.63 and 21,531.06 is: 30,320.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,289.63 : 21,531.06 = 21,531.06 : x
  2. Step 2: Convert to fraction form
    15,289.63/21,531.06 = 21,531.06/x
  3. Step 3: Cross multiply
    15,289.63x = 21,531.06 × 21,531.06
  4. Step 4: Simplify right side
    15,289.63x = 463,586,652.38
  5. Step 5: Solve for x
    x = 463,586,652.38/15,289.63
  6. Step 6: Final answer
    x = 30,320.34

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Why These Related Problems?

These problems maintain the same ratio (1.41) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.