Home / 30,843.33-42,541.77-21,286.83

Finding the Fourth Proportional to 30,843.33, 42,541.77 and 21,286.83

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Solution

The fourth proportional to 30,843.33, 42,541.77 and 21,286.83 is: 29,360.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,843.33 : 42,541.77 = 21,286.83 : x
  2. Step 2: Convert to fraction form
    30,843.33/42,541.77 = 21,286.83/x
  3. Step 3: Cross multiply
    30,843.33x = 42,541.77 × 21,286.83
  4. Step 4: Simplify right side
    30,843.33x = 905,579,425.89
  5. Step 5: Solve for x
    x = 905,579,425.89/30,843.33
  6. Step 6: Final answer
    x = 29,360.62

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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.