Home / 21,077.91-29,087.17-11,517.59

Finding the Fourth Proportional to 21,077.91, 29,087.17 and 11,517.59

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Solution

The fourth proportional to 21,077.91, 29,087.17 and 11,517.59 is: 15,894.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,077.91 : 29,087.17 = 11,517.59 : x
  2. Step 2: Convert to fraction form
    21,077.91/29,087.17 = 11,517.59/x
  3. Step 3: Cross multiply
    21,077.91x = 29,087.17 × 11,517.59
  4. Step 4: Simplify right side
    21,077.91x = 335,014,098.32
  5. Step 5: Solve for x
    x = 335,014,098.32/21,077.91
  6. Step 6: Final answer
    x = 15,894.09

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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.