Home / 31,546.21-43,511.45-20,218.92

Finding the Fourth Proportional to 31,546.21, 43,511.45 and 20,218.92

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Solution

The fourth proportional to 31,546.21, 43,511.45 and 20,218.92 is: 27,887.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,546.21 : 43,511.45 = 20,218.92 : x
  2. Step 2: Convert to fraction form
    31,546.21/43,511.45 = 20,218.92/x
  3. Step 3: Cross multiply
    31,546.21x = 43,511.45 × 20,218.92
  4. Step 4: Simplify right side
    31,546.21x = 879,754,262.37
  5. Step 5: Solve for x
    x = 879,754,262.37/31,546.21
  6. Step 6: Final answer
    x = 27,887.80

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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.