Home / 31,671.12-43,703.64-19,747.92

Finding the Fourth Proportional to 31,671.12, 43,703.64 and 19,747.92

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Solution

The fourth proportional to 31,671.12, 43,703.64 and 19,747.92 is: 27,250.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,671.12 : 43,703.64 = 19,747.92 : x
  2. Step 2: Convert to fraction form
    31,671.12/43,703.64 = 19,747.92/x
  3. Step 3: Cross multiply
    31,671.12x = 43,703.64 × 19,747.92
  4. Step 4: Simplify right side
    31,671.12x = 863,055,986.43
  5. Step 5: Solve for x
    x = 863,055,986.43/31,671.12
  6. Step 6: Final answer
    x = 27,250.57

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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.