Home / 13,872.36-20,853.65-11,129.04

Finding the Fourth Proportional to 13,872.36, 20,853.65 and 11,129.04

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Solution

The fourth proportional to 13,872.36, 20,853.65 and 11,129.04 is: 16,729.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,872.36 : 20,853.65 = 11,129.04 : x
  2. Step 2: Convert to fraction form
    13,872.36/20,853.65 = 11,129.04/x
  3. Step 3: Cross multiply
    13,872.36x = 20,853.65 × 11,129.04
  4. Step 4: Simplify right side
    13,872.36x = 232,081,169.29
  5. Step 5: Solve for x
    x = 232,081,169.29/13,872.36
  6. Step 6: Final answer
    x = 16,729.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.