Home / 18,815.36-28,227.74-13,279.51

Finding the Fourth Proportional to 18,815.36, 28,227.74 and 13,279.51

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Solution

The fourth proportional to 18,815.36, 28,227.74 and 13,279.51 is: 19,922.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,815.36 : 28,227.74 = 13,279.51 : x
  2. Step 2: Convert to fraction form
    18,815.36/28,227.74 = 13,279.51/x
  3. Step 3: Cross multiply
    18,815.36x = 28,227.74 × 13,279.51
  4. Step 4: Simplify right side
    18,815.36x = 374,850,555.61
  5. Step 5: Solve for x
    x = 374,850,555.61/18,815.36
  6. Step 6: Final answer
    x = 19,922.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.