Home / 21,965.67-30,166.40-18,422.73

Finding the Fourth Proportional to 21,965.67, 30,166.40 and 18,422.73

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Solution

The fourth proportional to 21,965.67, 30,166.40 and 18,422.73 is: 25,300.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,965.67 : 30,166.40 = 18,422.73 : x
  2. Step 2: Convert to fraction form
    21,965.67/30,166.40 = 18,422.73/x
  3. Step 3: Cross multiply
    21,965.67x = 30,166.40 × 18,422.73
  4. Step 4: Simplify right side
    21,965.67x = 555,747,488.33
  5. Step 5: Solve for x
    x = 555,747,488.33/21,965.67
  6. Step 6: Final answer
    x = 25,300.73

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Half scale
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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.