Home / 31,178.44-42,993.39-28,650.43

Finding the Fourth Proportional to 31,178.44, 42,993.39 and 28,650.43

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Solution

The fourth proportional to 31,178.44, 42,993.39 and 28,650.43 is: 39,507.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,178.44 : 42,993.39 = 28,650.43 : x
  2. Step 2: Convert to fraction form
    31,178.44/42,993.39 = 28,650.43/x
  3. Step 3: Cross multiply
    31,178.44x = 42,993.39 × 28,650.43
  4. Step 4: Simplify right side
    31,178.44x = 1,231,779,110.66
  5. Step 5: Solve for x
    x = 1,231,779,110.66/31,178.44
  6. Step 6: Final answer
    x = 39,507.40

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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.