Home / 21,186.19-29,236.64-11,754.79

Finding the Fourth Proportional to 21,186.19, 29,236.64 and 11,754.79

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Solution

The fourth proportional to 21,186.19, 29,236.64 and 11,754.79 is: 16,221.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,186.19 : 29,236.64 = 11,754.79 : x
  2. Step 2: Convert to fraction form
    21,186.19/29,236.64 = 11,754.79/x
  3. Step 3: Cross multiply
    21,186.19x = 29,236.64 × 11,754.79
  4. Step 4: Simplify right side
    21,186.19x = 343,670,417.32
  5. Step 5: Solve for x
    x = 343,670,417.32/21,186.19
  6. Step 6: Final answer
    x = 16,221.44

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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.