Home / 27,942.82-38,575.35-21,555.05

Finding the Fourth Proportional to 27,942.82, 38,575.35 and 21,555.05

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Solution

The fourth proportional to 27,942.82, 38,575.35 and 21,555.05 is: 29,756.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,942.82 : 38,575.35 = 21,555.05 : x
  2. Step 2: Convert to fraction form
    27,942.82/38,575.35 = 21,555.05/x
  3. Step 3: Cross multiply
    27,942.82x = 38,575.35 × 21,555.05
  4. Step 4: Simplify right side
    27,942.82x = 831,493,405.14
  5. Step 5: Solve for x
    x = 831,493,405.14/27,942.82
  6. Step 6: Final answer
    x = 29,756.96

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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.