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Finding the Fourth Proportional to 18,239.76, 27,359.76 and 15,767.28

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Solution

The fourth proportional to 18,239.76, 27,359.76 and 15,767.28 is: 23,651.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,239.76 : 27,359.76 = 15,767.28 : x
  2. Step 2: Convert to fraction form
    18,239.76/27,359.76 = 15,767.28/x
  3. Step 3: Cross multiply
    18,239.76x = 27,359.76 × 15,767.28
  4. Step 4: Simplify right side
    18,239.76x = 431,388,996.65
  5. Step 5: Solve for x
    x = 431,388,996.65/18,239.76
  6. Step 6: Final answer
    x = 23,651.02

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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.