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Finding the Fourth Proportional to 18,384.10, 27,568.05 and 7,287.10

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Solution

The fourth proportional to 18,384.10, 27,568.05 and 7,287.10 is: 10,927.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,384.10 : 27,568.05 = 7,287.10 : x
  2. Step 2: Convert to fraction form
    18,384.10/27,568.05 = 7,287.10/x
  3. Step 3: Cross multiply
    18,384.10x = 27,568.05 × 7,287.10
  4. Step 4: Simplify right side
    18,384.10x = 200,891,137.16
  5. Step 5: Solve for x
    x = 200,891,137.16/18,384.10
  6. Step 6: Final answer
    x = 10,927.44

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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.