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Finding the Fourth Proportional to 18,485.76, 27,721.26 and 10,700.04

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Solution

The fourth proportional to 18,485.76, 27,721.26 and 10,700.04 is: 16,045.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,485.76 : 27,721.26 = 10,700.04 : x
  2. Step 2: Convert to fraction form
    18,485.76/27,721.26 = 10,700.04/x
  3. Step 3: Cross multiply
    18,485.76x = 27,721.26 × 10,700.04
  4. Step 4: Simplify right side
    18,485.76x = 296,618,590.85
  5. Step 5: Solve for x
    x = 296,618,590.85/18,485.76
  6. Step 6: Final answer
    x = 16,045.79

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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.