Home / 38,634.66-53,313.26-21,405.88

Finding the Fourth Proportional to 38,634.66, 53,313.26 and 21,405.88

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Solution

The fourth proportional to 38,634.66, 53,313.26 and 21,405.88 is: 29,538.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,634.66 : 53,313.26 = 21,405.88 : x
  2. Step 2: Convert to fraction form
    38,634.66/53,313.26 = 21,405.88/x
  3. Step 3: Cross multiply
    38,634.66x = 53,313.26 × 21,405.88
  4. Step 4: Simplify right side
    38,634.66x = 1,141,217,245.97
  5. Step 5: Solve for x
    x = 1,141,217,245.97/38,634.66
  6. Step 6: Final answer
    x = 29,538.69

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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.