Home / 30,668.89-42,323.49-17,239.36

Finding the Fourth Proportional to 30,668.89, 42,323.49 and 17,239.36

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Solution

The fourth proportional to 30,668.89, 42,323.49 and 17,239.36 is: 23,790.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,668.89 : 42,323.49 = 17,239.36 : x
  2. Step 2: Convert to fraction form
    30,668.89/42,323.49 = 17,239.36/x
  3. Step 3: Cross multiply
    30,668.89x = 42,323.49 × 17,239.36
  4. Step 4: Simplify right side
    30,668.89x = 729,629,880.57
  5. Step 5: Solve for x
    x = 729,629,880.57/30,668.89
  6. Step 6: Final answer
    x = 23,790.55

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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.