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Finding the Fourth Proportional to 13,012.90, 17,957.79 and 7,044.56

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Solution

The fourth proportional to 13,012.90, 17,957.79 and 7,044.56 is: 9,721.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,012.90 : 17,957.79 = 7,044.56 : x
  2. Step 2: Convert to fraction form
    13,012.90/17,957.79 = 7,044.56/x
  3. Step 3: Cross multiply
    13,012.90x = 17,957.79 × 7,044.56
  4. Step 4: Simplify right side
    13,012.90x = 126,504,706.68
  5. Step 5: Solve for x
    x = 126,504,706.68/13,012.90
  6. Step 6: Final answer
    x = 9,721.49

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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.