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Finding the Fourth Proportional to 12,480.67, 17,223.41 and 6,815.27

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Solution

The fourth proportional to 12,480.67, 17,223.41 and 6,815.27 is: 9,405.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,480.67 : 17,223.41 = 6,815.27 : x
  2. Step 2: Convert to fraction form
    12,480.67/17,223.41 = 6,815.27/x
  3. Step 3: Cross multiply
    12,480.67x = 17,223.41 × 6,815.27
  4. Step 4: Simplify right side
    12,480.67x = 117,382,155.39
  5. Step 5: Solve for x
    x = 117,382,155.39/12,480.67
  6. Step 6: Final answer
    x = 9,405.12

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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.