Home / 19,845.91-27,388.74-13,119.85

Finding the Fourth Proportional to 19,845.91, 27,388.74 and 13,119.85

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Solution

The fourth proportional to 19,845.91, 27,388.74 and 13,119.85 is: 18,106.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,845.91 : 27,388.74 = 13,119.85 : x
  2. Step 2: Convert to fraction form
    19,845.91/27,388.74 = 13,119.85/x
  3. Step 3: Cross multiply
    19,845.91x = 27,388.74 × 13,119.85
  4. Step 4: Simplify right side
    19,845.91x = 359,336,160.49
  5. Step 5: Solve for x
    x = 359,336,160.49/19,845.91
  6. Step 6: Final answer
    x = 18,106.31

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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.