Home / 19,845.79-27,388.59-13,119.73

Finding the Fourth Proportional to 19,845.79, 27,388.59 and 13,119.73

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Solution

The fourth proportional to 19,845.79, 27,388.59 and 13,119.73 is: 18,106.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,845.79 : 27,388.59 = 13,119.73 : x
  2. Step 2: Convert to fraction form
    19,845.79/27,388.59 = 13,119.73/x
  3. Step 3: Cross multiply
    19,845.79x = 27,388.59 × 13,119.73
  4. Step 4: Simplify right side
    19,845.79x = 359,330,905.88
  5. Step 5: Solve for x
    x = 359,330,905.88/19,845.79
  6. Step 6: Final answer
    x = 18,106.15

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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.