Home / 31,504.68-43,436.52-20,747.88

Finding the Fourth Proportional to 31,504.68, 43,436.52 and 20,747.88

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Solution

The fourth proportional to 31,504.68, 43,436.52 and 20,747.88 is: 28,605.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,504.68 : 43,436.52 = 20,747.88 : x
  2. Step 2: Convert to fraction form
    31,504.68/43,436.52 = 20,747.88/x
  3. Step 3: Cross multiply
    31,504.68x = 43,436.52 × 20,747.88
  4. Step 4: Simplify right side
    31,504.68x = 901,215,704.58
  5. Step 5: Solve for x
    x = 901,215,704.58/31,504.68
  6. Step 6: Final answer
    x = 28,605.77

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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.