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Finding the Fourth Proportional to 12,480.95, 17,208.38 and 7,757.03

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Solution

The fourth proportional to 12,480.95, 17,208.38 and 7,757.03 is: 10,695.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,480.95 : 17,208.38 = 7,757.03 : x
  2. Step 2: Convert to fraction form
    12,480.95/17,208.38 = 7,757.03/x
  3. Step 3: Cross multiply
    12,480.95x = 17,208.38 × 7,757.03
  4. Step 4: Simplify right side
    12,480.95x = 133,485,982.32
  5. Step 5: Solve for x
    x = 133,485,982.32/12,480.95
  6. Step 6: Final answer
    x = 10,695.18

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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.