Home / 12,455.97-17,185.75-7,418.99

Finding the Fourth Proportional to 12,455.97, 17,185.75 and 7,418.99

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Solution

The fourth proportional to 12,455.97, 17,185.75 and 7,418.99 is: 10,236.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,455.97 : 17,185.75 = 7,418.99 : x
  2. Step 2: Convert to fraction form
    12,455.97/17,185.75 = 7,418.99/x
  3. Step 3: Cross multiply
    12,455.97x = 17,185.75 × 7,418.99
  4. Step 4: Simplify right side
    12,455.97x = 127,500,802.92
  5. Step 5: Solve for x
    x = 127,500,802.92/12,455.97
  6. Step 6: Final answer
    x = 10,236.12

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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.