Home / 39,680.32-54,760.42-21,775.97

Finding the Fourth Proportional to 39,680.32, 54,760.42 and 21,775.97

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Solution

The fourth proportional to 39,680.32, 54,760.42 and 21,775.97 is: 30,051.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,680.32 : 54,760.42 = 21,775.97 : x
  2. Step 2: Convert to fraction form
    39,680.32/54,760.42 = 21,775.97/x
  3. Step 3: Cross multiply
    39,680.32x = 54,760.42 × 21,775.97
  4. Step 4: Simplify right side
    39,680.32x = 1,192,461,427.23
  5. Step 5: Solve for x
    x = 1,192,461,427.23/39,680.32
  6. Step 6: Final answer
    x = 30,051.71

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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.