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Finding the Third Proportional to 15,347.81 and 20,832.19

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Solution

The third proportional to 15,347.81 and 20,832.19 is: 28,276.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,347.81 : 20,832.19 = 20,832.19 : x
  2. Step 2: Convert to fraction form
    15,347.81/20,832.19 = 20,832.19/x
  3. Step 3: Cross multiply
    15,347.81x = 20,832.19 × 20,832.19
  4. Step 4: Simplify right side
    15,347.81x = 433,980,036.04
  5. Step 5: Solve for x
    x = 433,980,036.04/15,347.81
  6. Step 6: Final answer
    x = 28,276.34

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Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.