Home / 21,028.56-29,022.75-12,645.06

Finding the Fourth Proportional to 21,028.56, 29,022.75 and 12,645.06

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Solution

The fourth proportional to 21,028.56, 29,022.75 and 12,645.06 is: 17,452.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,028.56 : 29,022.75 = 12,645.06 : x
  2. Step 2: Convert to fraction form
    21,028.56/29,022.75 = 12,645.06/x
  3. Step 3: Cross multiply
    21,028.56x = 29,022.75 × 12,645.06
  4. Step 4: Simplify right side
    21,028.56x = 366,994,415.12
  5. Step 5: Solve for x
    x = 366,994,415.12/21,028.56
  6. Step 6: Final answer
    x = 17,452.19

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1.5x scale

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.