Home / 20,680.45-28,544.25-11,733.28

Finding the Fourth Proportional to 20,680.45, 28,544.25 and 11,733.28

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Solution

The fourth proportional to 20,680.45, 28,544.25 and 11,733.28 is: 16,194.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,680.45 : 28,544.25 = 11,733.28 : x
  2. Step 2: Convert to fraction form
    20,680.45/28,544.25 = 11,733.28/x
  3. Step 3: Cross multiply
    20,680.45x = 28,544.25 × 11,733.28
  4. Step 4: Simplify right side
    20,680.45x = 334,917,677.64
  5. Step 5: Solve for x
    x = 334,917,677.64/20,680.45
  6. Step 6: Final answer
    x = 16,194.89

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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.