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Finding the Third Proportional to 14,388.75 and 21,075.75

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Solution

The third proportional to 14,388.75 and 21,075.75 is: 30,870.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,388.75 : 21,075.75 = 21,075.75 : x
  2. Step 2: Convert to fraction form
    14,388.75/21,075.75 = 21,075.75/x
  3. Step 3: Cross multiply
    14,388.75x = 21,075.75 × 21,075.75
  4. Step 4: Simplify right side
    14,388.75x = 444,187,238.06
  5. Step 5: Solve for x
    x = 444,187,238.06/14,388.75
  6. Step 6: Final answer
    x = 30,870.45

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Why These Related Problems?

These problems maintain the same ratio (1.46) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.