Home / 11,721.40-16,175.60-7,244.12

Finding the Fourth Proportional to 11,721.40, 16,175.60 and 7,244.12

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Solution

The fourth proportional to 11,721.40, 16,175.60 and 7,244.12 is: 9,996.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,721.40 : 16,175.60 = 7,244.12 : x
  2. Step 2: Convert to fraction form
    11,721.40/16,175.60 = 7,244.12/x
  3. Step 3: Cross multiply
    11,721.40x = 16,175.60 × 7,244.12
  4. Step 4: Simplify right side
    11,721.40x = 117,177,987.47
  5. Step 5: Solve for x
    x = 117,177,987.47/11,721.40
  6. Step 6: Final answer
    x = 9,996.93

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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.