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Finding the Fourth Proportional to 12,480.06, 17,222.49 and 6,891.06

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Solution

The fourth proportional to 12,480.06, 17,222.49 and 6,891.06 is: 9,509.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,480.06 : 17,222.49 = 6,891.06 : x
  2. Step 2: Convert to fraction form
    12,480.06/17,222.49 = 6,891.06/x
  3. Step 3: Cross multiply
    12,480.06x = 17,222.49 × 6,891.06
  4. Step 4: Simplify right side
    12,480.06x = 118,681,211.94
  5. Step 5: Solve for x
    x = 118,681,211.94/12,480.06
  6. Step 6: Final answer
    x = 9,509.67

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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.