Home / 21,795.66-30,077.73-12,843.54

Finding the Fourth Proportional to 21,795.66, 30,077.73 and 12,843.54

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Solution

The fourth proportional to 21,795.66, 30,077.73 and 12,843.54 is: 17,723.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,795.66 : 30,077.73 = 12,843.54 : x
  2. Step 2: Convert to fraction form
    21,795.66/30,077.73 = 12,843.54/x
  3. Step 3: Cross multiply
    21,795.66x = 30,077.73 × 12,843.54
  4. Step 4: Simplify right side
    21,795.66x = 386,304,528.36
  5. Step 5: Solve for x
    x = 386,304,528.36/21,795.66
  6. Step 6: Final answer
    x = 17,723.92

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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.