Home / 15,744.12-21,726.84-8,670.54

Finding the Fourth Proportional to 15,744.12, 21,726.84 and 8,670.54

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Solution

The fourth proportional to 15,744.12, 21,726.84 and 8,670.54 is: 11,965.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,744.12 : 21,726.84 = 8,670.54 : x
  2. Step 2: Convert to fraction form
    15,744.12/21,726.84 = 8,670.54/x
  3. Step 3: Cross multiply
    15,744.12x = 21,726.84 × 8,670.54
  4. Step 4: Simplify right side
    15,744.12x = 188,383,435.29
  5. Step 5: Solve for x
    x = 188,383,435.29/15,744.12
  6. Step 6: Final answer
    x = 11,965.32

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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.