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Finding the Third Proportional to 15,111.56 and 20,925.84

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Solution

The third proportional to 15,111.56 and 20,925.84 is: 28,977.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,111.56 : 20,925.84 = 20,925.84 : x
  2. Step 2: Convert to fraction form
    15,111.56/20,925.84 = 20,925.84/x
  3. Step 3: Cross multiply
    15,111.56x = 20,925.84 × 20,925.84
  4. Step 4: Simplify right side
    15,111.56x = 437,890,936.65
  5. Step 5: Solve for x
    x = 437,890,936.65/15,111.56
  6. Step 6: Final answer
    x = 28,977.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.