Home / 31,306.49-46,959.83-9,120.41

Finding the Fourth Proportional to 31,306.49, 46,959.83 and 9,120.41

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Solution

The fourth proportional to 31,306.49, 46,959.83 and 9,120.41 is: 13,680.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,306.49 : 46,959.83 = 9,120.41 : x
  2. Step 2: Convert to fraction form
    31,306.49/46,959.83 = 9,120.41/x
  3. Step 3: Cross multiply
    31,306.49x = 46,959.83 × 9,120.41
  4. Step 4: Simplify right side
    31,306.49x = 428,292,622.73
  5. Step 5: Solve for x
    x = 428,292,622.73/31,306.49
  6. Step 6: Final answer
    x = 13,680.64

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.