Home / 13,619.35-18,796.89-12,729.97

Finding the Fourth Proportional to 13,619.35, 18,796.89 and 12,729.97

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Solution

The fourth proportional to 13,619.35, 18,796.89 and 12,729.97 is: 17,569.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,619.35 : 18,796.89 = 12,729.97 : x
  2. Step 2: Convert to fraction form
    13,619.35/18,796.89 = 12,729.97/x
  3. Step 3: Cross multiply
    13,619.35x = 18,796.89 × 12,729.97
  4. Step 4: Simplify right side
    13,619.35x = 239,283,845.79
  5. Step 5: Solve for x
    x = 239,283,845.79/13,619.35
  6. Step 6: Final answer
    x = 17,569.40

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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.