Home / 21,651.96-29,883.66-18,109.56

Finding the Fourth Proportional to 21,651.96, 29,883.66 and 18,109.56

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Solution

The fourth proportional to 21,651.96, 29,883.66 and 18,109.56 is: 24,994.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,651.96 : 29,883.66 = 18,109.56 : x
  2. Step 2: Convert to fraction form
    21,651.96/29,883.66 = 18,109.56/x
  3. Step 3: Cross multiply
    21,651.96x = 29,883.66 × 18,109.56
  4. Step 4: Simplify right side
    21,651.96x = 541,179,933.79
  5. Step 5: Solve for x
    x = 541,179,933.79/21,651.96
  6. Step 6: Final answer
    x = 24,994.50

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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.