Home / 12,425.49-17,147.48-7,121.97

Finding the Fourth Proportional to 12,425.49, 17,147.48 and 7,121.97

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Solution

The fourth proportional to 12,425.49, 17,147.48 and 7,121.97 is: 9,828.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,425.49 : 17,147.48 = 7,121.97 : x
  2. Step 2: Convert to fraction form
    12,425.49/17,147.48 = 7,121.97/x
  3. Step 3: Cross multiply
    12,425.49x = 17,147.48 × 7,121.97
  4. Step 4: Simplify right side
    12,425.49x = 122,123,802.53
  5. Step 5: Solve for x
    x = 122,123,802.53/12,425.49
  6. Step 6: Final answer
    x = 9,828.49

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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.