Home / 31,763.20-43,836.80-18,338

Finding the Fourth Proportional to 31,763.20, 43,836.80 and 18,338

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Solution

The fourth proportional to 31,763.20, 43,836.80 and 18,338 is: 25,308.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,763.20 : 43,836.80 = 18,338 : x
  2. Step 2: Convert to fraction form
    31,763.20/43,836.80 = 18,338/x
  3. Step 3: Cross multiply
    31,763.20x = 43,836.80 × 18,338
  4. Step 4: Simplify right side
    31,763.20x = 803,879,238.40
  5. Step 5: Solve for x
    x = 803,879,238.40/31,763.20
  6. Step 6: Final answer
    x = 25,308.51

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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.