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Finding the Third Proportional to 18,418.50 and 28,811.25

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Solution

The third proportional to 18,418.50 and 28,811.25 is: 45,068.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,418.50 : 28,811.25 = 28,811.25 : x
  2. Step 2: Convert to fraction form
    18,418.50/28,811.25 = 28,811.25/x
  3. Step 3: Cross multiply
    18,418.50x = 28,811.25 × 28,811.25
  4. Step 4: Simplify right side
    18,418.50x = 830,088,126.56
  5. Step 5: Solve for x
    x = 830,088,126.56/18,418.50
  6. Step 6: Final answer
    x = 45,068.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.