Home / 21,186.42-29,236.29-11,754.90

Finding the Fourth Proportional to 21,186.42, 29,236.29 and 11,754.90

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Solution

The fourth proportional to 21,186.42, 29,236.29 and 11,754.90 is: 16,221.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,186.42 : 29,236.29 = 11,754.90 : x
  2. Step 2: Convert to fraction form
    21,186.42/29,236.29 = 11,754.90/x
  3. Step 3: Cross multiply
    21,186.42x = 29,236.29 × 11,754.90
  4. Step 4: Simplify right side
    21,186.42x = 343,669,665.32
  5. Step 5: Solve for x
    x = 343,669,665.32/21,186.42
  6. Step 6: Final answer
    x = 16,221.22

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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.