Home / 19,923.12-27,486.72-13,212

Finding the Fourth Proportional to 19,923.12, 27,486.72 and 13,212

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Solution

The fourth proportional to 19,923.12, 27,486.72 and 13,212 is: 18,227.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,923.12 : 27,486.72 = 13,212 : x
  2. Step 2: Convert to fraction form
    19,923.12/27,486.72 = 13,212/x
  3. Step 3: Cross multiply
    19,923.12x = 27,486.72 × 13,212
  4. Step 4: Simplify right side
    19,923.12x = 363,154,544.64
  5. Step 5: Solve for x
    x = 363,154,544.64/19,923.12
  6. Step 6: Final answer
    x = 18,227.79

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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.