Home / 11,981.90-17,884.14-11,243.18

Finding the Fourth Proportional to 11,981.90, 17,884.14 and 11,243.18

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Solution

The fourth proportional to 11,981.90, 17,884.14 and 11,243.18 is: 16,781.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,981.90 : 17,884.14 = 11,243.18 : x
  2. Step 2: Convert to fraction form
    11,981.90/17,884.14 = 11,243.18/x
  3. Step 3: Cross multiply
    11,981.90x = 17,884.14 × 11,243.18
  4. Step 4: Simplify right side
    11,981.90x = 201,074,605.17
  5. Step 5: Solve for x
    x = 201,074,605.17/11,981.90
  6. Step 6: Final answer
    x = 16,781.53

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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.