Home / 12,629.92-17,429.52-7,040.48

Finding the Fourth Proportional to 12,629.92, 17,429.52 and 7,040.48

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Solution

The fourth proportional to 12,629.92, 17,429.52 and 7,040.48 is: 9,715.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,629.92 : 17,429.52 = 7,040.48 : x
  2. Step 2: Convert to fraction form
    12,629.92/17,429.52 = 7,040.48/x
  3. Step 3: Cross multiply
    12,629.92x = 17,429.52 × 7,040.48
  4. Step 4: Simplify right side
    12,629.92x = 122,712,186.97
  5. Step 5: Solve for x
    x = 122,712,186.97/12,629.92
  6. Step 6: Final answer
    x = 9,715.99

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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.