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Finding the Fourth Proportional to 18,704.69, 28,057.03 and 7,009.71

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Solution

The fourth proportional to 18,704.69, 28,057.03 and 7,009.71 is: 10,514.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,704.69 : 28,057.03 = 7,009.71 : x
  2. Step 2: Convert to fraction form
    18,704.69/28,057.03 = 7,009.71/x
  3. Step 3: Cross multiply
    18,704.69x = 28,057.03 × 7,009.71
  4. Step 4: Simplify right side
    18,704.69x = 196,671,643.76
  5. Step 5: Solve for x
    x = 196,671,643.76/18,704.69
  6. Step 6: Final answer
    x = 10,514.56

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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.