Home / 20,676.64-28,534.80-11,722.72

Finding the Fourth Proportional to 20,676.64, 28,534.80 and 11,722.72

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Solution

The fourth proportional to 20,676.64, 28,534.80 and 11,722.72 is: 16,177.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,676.64 : 28,534.80 = 11,722.72 : x
  2. Step 2: Convert to fraction form
    20,676.64/28,534.80 = 11,722.72/x
  3. Step 3: Cross multiply
    20,676.64x = 28,534.80 × 11,722.72
  4. Step 4: Simplify right side
    20,676.64x = 334,505,470.66
  5. Step 5: Solve for x
    x = 334,505,470.66/20,676.64
  6. Step 6: Final answer
    x = 16,177.94

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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.