Home / 31,195.52-43,078.72-20,037.12

Finding the Fourth Proportional to 31,195.52, 43,078.72 and 20,037.12

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Solution

The fourth proportional to 31,195.52, 43,078.72 and 20,037.12 is: 27,669.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,195.52 : 43,078.72 = 20,037.12 : x
  2. Step 2: Convert to fraction form
    31,195.52/43,078.72 = 20,037.12/x
  3. Step 3: Cross multiply
    31,195.52x = 43,078.72 × 20,037.12
  4. Step 4: Simplify right side
    31,195.52x = 863,173,482.09
  5. Step 5: Solve for x
    x = 863,173,482.09/31,195.52
  6. Step 6: Final answer
    x = 27,669.79

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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.