Home / 19,924.72-27,477.78-13,115.84

Finding the Fourth Proportional to 19,924.72, 27,477.78 and 13,115.84

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Solution

The fourth proportional to 19,924.72, 27,477.78 and 13,115.84 is: 18,087.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,924.72 : 27,477.78 = 13,115.84 : x
  2. Step 2: Convert to fraction form
    19,924.72/27,477.78 = 13,115.84/x
  3. Step 3: Cross multiply
    19,924.72x = 27,477.78 × 13,115.84
  4. Step 4: Simplify right side
    19,924.72x = 360,394,166.04
  5. Step 5: Solve for x
    x = 360,394,166.04/19,924.72
  6. Step 6: Final answer
    x = 18,087.79

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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.