Home / 31,392.30-43,319.40-28,884.54

Finding the Fourth Proportional to 31,392.30, 43,319.40 and 28,884.54

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Solution

The fourth proportional to 31,392.30, 43,319.40 and 28,884.54 is: 39,858.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,392.30 : 43,319.40 = 28,884.54 : x
  2. Step 2: Convert to fraction form
    31,392.30/43,319.40 = 28,884.54/x
  3. Step 3: Cross multiply
    31,392.30x = 43,319.40 × 28,884.54
  4. Step 4: Simplify right side
    31,392.30x = 1,251,260,942.08
  5. Step 5: Solve for x
    x = 1,251,260,942.08/31,392.30
  6. Step 6: Final answer
    x = 39,858.85

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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.