Home / 31,330.97-46,939.82-20,775.86

Finding the Fourth Proportional to 31,330.97, 46,939.82 and 20,775.86

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Solution

The fourth proportional to 31,330.97, 46,939.82 and 20,775.86 is: 31,126.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,330.97 : 46,939.82 = 20,775.86 : x
  2. Step 2: Convert to fraction form
    31,330.97/46,939.82 = 20,775.86/x
  3. Step 3: Cross multiply
    31,330.97x = 46,939.82 × 20,775.86
  4. Step 4: Simplify right side
    31,330.97x = 975,214,790.17
  5. Step 5: Solve for x
    x = 975,214,790.17/31,330.97
  6. Step 6: Final answer
    x = 31,126.23

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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.