Home / 21,775.96-30,111.11-17,291.80

Finding the Fourth Proportional to 21,775.96, 30,111.11 and 17,291.80

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Solution

The fourth proportional to 21,775.96, 30,111.11 and 17,291.80 is: 23,910.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,775.96 : 30,111.11 = 17,291.80 : x
  2. Step 2: Convert to fraction form
    21,775.96/30,111.11 = 17,291.80/x
  3. Step 3: Cross multiply
    21,775.96x = 30,111.11 × 17,291.80
  4. Step 4: Simplify right side
    21,775.96x = 520,675,291.90
  5. Step 5: Solve for x
    x = 520,675,291.90/21,775.96
  6. Step 6: Final answer
    x = 23,910.56

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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.