Home / 12,605.47-17,395.97-6,940.50

Finding the Fourth Proportional to 12,605.47, 17,395.97 and 6,940.50

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Solution

The fourth proportional to 12,605.47, 17,395.97 and 6,940.50 is: 9,578.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,605.47 : 17,395.97 = 6,940.50 : x
  2. Step 2: Convert to fraction form
    12,605.47/17,395.97 = 6,940.50/x
  3. Step 3: Cross multiply
    12,605.47x = 17,395.97 × 6,940.50
  4. Step 4: Simplify right side
    12,605.47x = 120,736,629.85
  5. Step 5: Solve for x
    x = 120,736,629.85/12,605.47
  6. Step 6: Final answer
    x = 9,578.12

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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.