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Finding the Third Proportional to 20,475 and 30,856.50

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Solution

The third proportional to 20,475 and 30,856.50 is: 46,501.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,475 : 30,856.50 = 30,856.50 : x
  2. Step 2: Convert to fraction form
    20,475/30,856.50 = 30,856.50/x
  3. Step 3: Cross multiply
    20,475x = 30,856.50 × 30,856.50
  4. Step 4: Simplify right side
    20,475x = 952,123,592.25
  5. Step 5: Solve for x
    x = 952,123,592.25/20,475
  6. Step 6: Final answer
    x = 46,501.76

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.