Home / 31,743.08-43,808.28-20,439.58

Finding the Fourth Proportional to 31,743.08, 43,808.28 and 20,439.58

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Solution

The fourth proportional to 31,743.08, 43,808.28 and 20,439.58 is: 28,208.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,743.08 : 43,808.28 = 20,439.58 : x
  2. Step 2: Convert to fraction form
    31,743.08/43,808.28 = 20,439.58/x
  3. Step 3: Cross multiply
    31,743.08x = 43,808.28 × 20,439.58
  4. Step 4: Simplify right side
    31,743.08x = 895,422,843.72
  5. Step 5: Solve for x
    x = 895,422,843.72/31,743.08
  6. Step 6: Final answer
    x = 28,208.44

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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.