Home / 21,111.44-29,134.56-11,680.08

Finding the Fourth Proportional to 21,111.44, 29,134.56 and 11,680.08

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Solution

The fourth proportional to 21,111.44, 29,134.56 and 11,680.08 is: 16,118.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,111.44 : 29,134.56 = 11,680.08 : x
  2. Step 2: Convert to fraction form
    21,111.44/29,134.56 = 11,680.08/x
  3. Step 3: Cross multiply
    21,111.44x = 29,134.56 × 11,680.08
  4. Step 4: Simplify right side
    21,111.44x = 340,293,991.56
  5. Step 5: Solve for x
    x = 340,293,991.56/21,111.44
  6. Step 6: Final answer
    x = 16,118.94

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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.