Home / 11,522.01-17,239.26-7,128.57

Finding the Fourth Proportional to 11,522.01, 17,239.26 and 7,128.57

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Solution

The fourth proportional to 11,522.01, 17,239.26 and 7,128.57 is: 10,665.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,522.01 : 17,239.26 = 7,128.57 : x
  2. Step 2: Convert to fraction form
    11,522.01/17,239.26 = 7,128.57/x
  3. Step 3: Cross multiply
    11,522.01x = 17,239.26 × 7,128.57
  4. Step 4: Simplify right side
    11,522.01x = 122,891,271.66
  5. Step 5: Solve for x
    x = 122,891,271.66/11,522.01
  6. Step 6: Final answer
    x = 10,665.78

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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.