Home / 31,639.81-43,650.38-18,203.84

Finding the Fourth Proportional to 31,639.81, 43,650.38 and 18,203.84

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Solution

The fourth proportional to 31,639.81, 43,650.38 and 18,203.84 is: 25,114.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,639.81 : 43,650.38 = 18,203.84 : x
  2. Step 2: Convert to fraction form
    31,639.81/43,650.38 = 18,203.84/x
  3. Step 3: Cross multiply
    31,639.81x = 43,650.38 × 18,203.84
  4. Step 4: Simplify right side
    31,639.81x = 794,604,360.72
  5. Step 5: Solve for x
    x = 794,604,360.72/31,639.81
  6. Step 6: Final answer
    x = 25,114.07

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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.