Home / 38,785.83-53,524.66-21,790.79

Finding the Fourth Proportional to 38,785.83, 53,524.66 and 21,790.79

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Solution

The fourth proportional to 38,785.83, 53,524.66 and 21,790.79 is: 30,071.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,785.83 : 53,524.66 = 21,790.79 : x
  2. Step 2: Convert to fraction form
    38,785.83/53,524.66 = 21,790.79/x
  3. Step 3: Cross multiply
    38,785.83x = 53,524.66 × 21,790.79
  4. Step 4: Simplify right side
    38,785.83x = 1,166,344,625.88
  5. Step 5: Solve for x
    x = 1,166,344,625.88/38,785.83
  6. Step 6: Final answer
    x = 30,071.41

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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.