Home / 27,620.64-38,104.34-18,664.88

Finding the Fourth Proportional to 27,620.64, 38,104.34 and 18,664.88

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Solution

The fourth proportional to 27,620.64, 38,104.34 and 18,664.88 is: 25,749.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,620.64 : 38,104.34 = 18,664.88 : x
  2. Step 2: Convert to fraction form
    27,620.64/38,104.34 = 18,664.88/x
  3. Step 3: Cross multiply
    27,620.64x = 38,104.34 × 18,664.88
  4. Step 4: Simplify right side
    27,620.64x = 711,212,933.58
  5. Step 5: Solve for x
    x = 711,212,933.58/27,620.64
  6. Step 6: Final answer
    x = 25,749.33

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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.