Home / 12,461.60-17,198.36-7,680.56

Finding the Fourth Proportional to 12,461.60, 17,198.36 and 7,680.56

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Solution

The fourth proportional to 12,461.60, 17,198.36 and 7,680.56 is: 10,600.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,461.60 : 17,198.36 = 7,680.56 : x
  2. Step 2: Convert to fraction form
    12,461.60/17,198.36 = 7,680.56/x
  3. Step 3: Cross multiply
    12,461.60x = 17,198.36 × 7,680.56
  4. Step 4: Simplify right side
    12,461.60x = 132,093,035.88
  5. Step 5: Solve for x
    x = 132,093,035.88/12,461.60
  6. Step 6: Final answer
    x = 10,600.01

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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.