Home / 30,668.76-42,321.70-17,240.58

Finding the Fourth Proportional to 30,668.76, 42,321.70 and 17,240.58

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Solution

The fourth proportional to 30,668.76, 42,321.70 and 17,240.58 is: 23,791.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,668.76 : 42,321.70 = 17,240.58 : x
  2. Step 2: Convert to fraction form
    30,668.76/42,321.70 = 17,240.58/x
  3. Step 3: Cross multiply
    30,668.76x = 42,321.70 × 17,240.58
  4. Step 4: Simplify right side
    30,668.76x = 729,650,654.59
  5. Step 5: Solve for x
    x = 729,650,654.59/30,668.76
  6. Step 6: Final answer
    x = 23,791.33

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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.