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Finding the Third Proportional to 20,779.50 and 29,938.50

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Solution

The third proportional to 20,779.50 and 29,938.50 is: 43,134.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,779.50 : 29,938.50 = 29,938.50 : x
  2. Step 2: Convert to fraction form
    20,779.50/29,938.50 = 29,938.50/x
  3. Step 3: Cross multiply
    20,779.50x = 29,938.50 × 29,938.50
  4. Step 4: Simplify right side
    20,779.50x = 896,313,782.25
  5. Step 5: Solve for x
    x = 896,313,782.25/20,779.50
  6. Step 6: Final answer
    x = 43,134.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.44) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.