Home / 21,101.41-29,118.86-11,539.44

Finding the Fourth Proportional to 21,101.41, 29,118.86 and 11,539.44

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Solution

The fourth proportional to 21,101.41, 29,118.86 and 11,539.44 is: 15,923.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,101.41 : 29,118.86 = 11,539.44 : x
  2. Step 2: Convert to fraction form
    21,101.41/29,118.86 = 11,539.44/x
  3. Step 3: Cross multiply
    21,101.41x = 29,118.86 × 11,539.44
  4. Step 4: Simplify right side
    21,101.41x = 336,015,337.84
  5. Step 5: Solve for x
    x = 336,015,337.84/21,101.41
  6. Step 6: Final answer
    x = 15,923.83

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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.