Home / 27,739.73-38,235.81-21,679.31

Finding the Fourth Proportional to 27,739.73, 38,235.81 and 21,679.31

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Solution

The fourth proportional to 27,739.73, 38,235.81 and 21,679.31 is: 29,882.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,739.73 : 38,235.81 = 21,679.31 : x
  2. Step 2: Convert to fraction form
    27,739.73/38,235.81 = 21,679.31/x
  3. Step 3: Cross multiply
    27,739.73x = 38,235.81 × 21,679.31
  4. Step 4: Simplify right side
    27,739.73x = 828,926,154.98
  5. Step 5: Solve for x
    x = 828,926,154.98/27,739.73
  6. Step 6: Final answer
    x = 29,882.27

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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.