Home / 31,860.38-43,963.76-18,429.64

Finding the Fourth Proportional to 31,860.38, 43,963.76 and 18,429.64

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Solution

The fourth proportional to 31,860.38, 43,963.76 and 18,429.64 is: 25,430.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,860.38 : 43,963.76 = 18,429.64 : x
  2. Step 2: Convert to fraction form
    31,860.38/43,963.76 = 18,429.64/x
  3. Step 3: Cross multiply
    31,860.38x = 43,963.76 × 18,429.64
  4. Step 4: Simplify right side
    31,860.38x = 810,236,269.85
  5. Step 5: Solve for x
    x = 810,236,269.85/31,860.38
  6. Step 6: Final answer
    x = 25,430.84

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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.