Home / 31,483.44-43,433.88-20,854.62

Finding the Fourth Proportional to 31,483.44, 43,433.88 and 20,854.62

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Solution

The fourth proportional to 31,483.44, 43,433.88 and 20,854.62 is: 28,770.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,483.44 : 43,433.88 = 20,854.62 : x
  2. Step 2: Convert to fraction form
    31,483.44/43,433.88 = 20,854.62/x
  3. Step 3: Cross multiply
    31,483.44x = 43,433.88 × 20,854.62
  4. Step 4: Simplify right side
    31,483.44x = 905,797,062.53
  5. Step 5: Solve for x
    x = 905,797,062.53/31,483.44
  6. Step 6: Final answer
    x = 28,770.59

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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.