Home / 21,185.43-31,783.28-6,393.44

Finding the Fourth Proportional to 21,185.43, 31,783.28 and 6,393.44

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Solution

The fourth proportional to 21,185.43, 31,783.28 and 6,393.44 is: 9,591.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,185.43 : 31,783.28 = 6,393.44 : x
  2. Step 2: Convert to fraction form
    21,185.43/31,783.28 = 6,393.44/x
  3. Step 3: Cross multiply
    21,185.43x = 31,783.28 × 6,393.44
  4. Step 4: Simplify right side
    21,185.43x = 203,204,541.17
  5. Step 5: Solve for x
    x = 203,204,541.17/21,185.43
  6. Step 6: Final answer
    x = 9,591.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.