Home / 21,186.06-29,236.47-11,754.66

Finding the Fourth Proportional to 21,186.06, 29,236.47 and 11,754.66

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Solution

The fourth proportional to 21,186.06, 29,236.47 and 11,754.66 is: 16,221.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,186.06 : 29,236.47 = 11,754.66 : x
  2. Step 2: Convert to fraction form
    21,186.06/29,236.47 = 11,754.66/x
  3. Step 3: Cross multiply
    21,186.06x = 29,236.47 × 11,754.66
  4. Step 4: Simplify right side
    21,186.06x = 343,664,764.45
  5. Step 5: Solve for x
    x = 343,664,764.45/21,186.06
  6. Step 6: Final answer
    x = 16,221.27

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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.