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Finding the Fourth Proportional to 18,121.58, 27,191.06 and 9,356.49

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Solution

The fourth proportional to 18,121.58, 27,191.06 and 9,356.49 is: 14,039.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,121.58 : 27,191.06 = 9,356.49 : x
  2. Step 2: Convert to fraction form
    18,121.58/27,191.06 = 9,356.49/x
  3. Step 3: Cross multiply
    18,121.58x = 27,191.06 × 9,356.49
  4. Step 4: Simplify right side
    18,121.58x = 254,412,834.20
  5. Step 5: Solve for x
    x = 254,412,834.20/18,121.58
  6. Step 6: Final answer
    x = 14,039.22

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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.