Home / 21,819.58-30,110.16-13,335.91

Finding the Fourth Proportional to 21,819.58, 30,110.16 and 13,335.91

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Solution

The fourth proportional to 21,819.58, 30,110.16 and 13,335.91 is: 18,403.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,819.58 : 30,110.16 = 13,335.91 : x
  2. Step 2: Convert to fraction form
    21,819.58/30,110.16 = 13,335.91/x
  3. Step 3: Cross multiply
    21,819.58x = 30,110.16 × 13,335.91
  4. Step 4: Simplify right side
    21,819.58x = 401,546,383.85
  5. Step 5: Solve for x
    x = 401,546,383.85/21,819.58
  6. Step 6: Final answer
    x = 18,403.03

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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.