Home / 11,981.40-17,883.39-11,242.68

Finding the Fourth Proportional to 11,981.40, 17,883.39 and 11,242.68

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Solution

The fourth proportional to 11,981.40, 17,883.39 and 11,242.68 is: 16,780.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,981.40 : 17,883.39 = 11,242.68 : x
  2. Step 2: Convert to fraction form
    11,981.40/17,883.39 = 11,242.68/x
  3. Step 3: Cross multiply
    11,981.40x = 17,883.39 × 11,242.68
  4. Step 4: Simplify right side
    11,981.40x = 201,057,231.09
  5. Step 5: Solve for x
    x = 201,057,231.09/11,981.40
  6. Step 6: Final answer
    x = 16,780.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.