Home / 21,077.82-29,085.21-11,645.10

Finding the Fourth Proportional to 21,077.82, 29,085.21 and 11,645.10

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Solution

The fourth proportional to 21,077.82, 29,085.21 and 11,645.10 is: 16,069.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,077.82 : 29,085.21 = 11,645.10 : x
  2. Step 2: Convert to fraction form
    21,077.82/29,085.21 = 11,645.10/x
  3. Step 3: Cross multiply
    21,077.82x = 29,085.21 × 11,645.10
  4. Step 4: Simplify right side
    21,077.82x = 338,700,178.97
  5. Step 5: Solve for x
    x = 338,700,178.97/21,077.82
  6. Step 6: Final answer
    x = 16,069.03

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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.