Home / 31,394.30-43,322.16-28,886.54

Finding the Fourth Proportional to 31,394.30, 43,322.16 and 28,886.54

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Solution

The fourth proportional to 31,394.30, 43,322.16 and 28,886.54 is: 39,861.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,394.30 : 43,322.16 = 28,886.54 : x
  2. Step 2: Convert to fraction form
    31,394.30/43,322.16 = 28,886.54/x
  3. Step 3: Cross multiply
    31,394.30x = 43,322.16 × 28,886.54
  4. Step 4: Simplify right side
    31,394.30x = 1,251,427,307.73
  5. Step 5: Solve for x
    x = 1,251,427,307.73/31,394.30
  6. Step 6: Final answer
    x = 39,861.61

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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.