Home / 11,405.57-17,113.76-7,900.97

Finding the Fourth Proportional to 11,405.57, 17,113.76 and 7,900.97

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Solution

The fourth proportional to 11,405.57, 17,113.76 and 7,900.97 is: 11,855.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,405.57 : 17,113.76 = 7,900.97 : x
  2. Step 2: Convert to fraction form
    11,405.57/17,113.76 = 7,900.97/x
  3. Step 3: Cross multiply
    11,405.57x = 17,113.76 × 7,900.97
  4. Step 4: Simplify right side
    11,405.57x = 135,215,238.53
  5. Step 5: Solve for x
    x = 135,215,238.53/11,405.57
  6. Step 6: Final answer
    x = 11,855.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.