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Finding the Third Proportional to 18,109.13 and 28,815.19

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Solution

The third proportional to 18,109.13 and 28,815.19 is: 45,850.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,109.13 : 28,815.19 = 28,815.19 : x
  2. Step 2: Convert to fraction form
    18,109.13/28,815.19 = 28,815.19/x
  3. Step 3: Cross multiply
    18,109.13x = 28,815.19 × 28,815.19
  4. Step 4: Simplify right side
    18,109.13x = 830,315,030.66
  5. Step 5: Solve for x
    x = 830,315,030.66/18,109.13
  6. Step 6: Final answer
    x = 45,850.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.