Home / 21,186.24-29,236.32-11,755.68

Finding the Fourth Proportional to 21,186.24, 29,236.32 and 11,755.68

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Solution

The fourth proportional to 21,186.24, 29,236.32 and 11,755.68 is: 16,222.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,186.24 : 29,236.32 = 11,755.68 : x
  2. Step 2: Convert to fraction form
    21,186.24/29,236.32 = 11,755.68/x
  3. Step 3: Cross multiply
    21,186.24x = 29,236.32 × 11,755.68
  4. Step 4: Simplify right side
    21,186.24x = 343,692,822.30
  5. Step 5: Solve for x
    x = 343,692,822.30/21,186.24
  6. Step 6: Final answer
    x = 16,222.45

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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.