Home / 21,076.70-31,619.64-6,286.82

Finding the Fourth Proportional to 21,076.70, 31,619.64 and 6,286.82

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Solution

The fourth proportional to 21,076.70, 31,619.64 and 6,286.82 is: 9,431.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,076.70 : 31,619.64 = 6,286.82 : x
  2. Step 2: Convert to fraction form
    21,076.70/31,619.64 = 6,286.82/x
  3. Step 3: Cross multiply
    21,076.70x = 31,619.64 × 6,286.82
  4. Step 4: Simplify right side
    21,076.70x = 198,786,985.14
  5. Step 5: Solve for x
    x = 198,786,985.14/21,076.70
  6. Step 6: Final answer
    x = 9,431.60

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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.