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Finding the Fourth Proportional to 18,178.26, 27,279.95 and 11,941.26

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Solution

The fourth proportional to 18,178.26, 27,279.95 and 11,941.26 is: 17,920.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,178.26 : 27,279.95 = 11,941.26 : x
  2. Step 2: Convert to fraction form
    18,178.26/27,279.95 = 11,941.26/x
  3. Step 3: Cross multiply
    18,178.26x = 27,279.95 × 11,941.26
  4. Step 4: Simplify right side
    18,178.26x = 325,756,916.03
  5. Step 5: Solve for x
    x = 325,756,916.03/18,178.26
  6. Step 6: Final answer
    x = 17,920.14

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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.