Home / 13,872.24-20,853.46-11,128.92

Finding the Fourth Proportional to 13,872.24, 20,853.46 and 11,128.92

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Solution

The fourth proportional to 13,872.24, 20,853.46 and 11,128.92 is: 16,729.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,872.24 : 20,853.46 = 11,128.92 : x
  2. Step 2: Convert to fraction form
    13,872.24/20,853.46 = 11,128.92/x
  3. Step 3: Cross multiply
    13,872.24x = 20,853.46 × 11,128.92
  4. Step 4: Simplify right side
    13,872.24x = 232,076,515.89
  5. Step 5: Solve for x
    x = 232,076,515.89/13,872.24
  6. Step 6: Final answer
    x = 16,729.57

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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.