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Finding the Fourth Proportional to 18,783.69, 28,174.58 and 6,303.82

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Solution

The fourth proportional to 18,783.69, 28,174.58 and 6,303.82 is: 9,455.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,783.69 : 28,174.58 = 6,303.82 : x
  2. Step 2: Convert to fraction form
    18,783.69/28,174.58 = 6,303.82/x
  3. Step 3: Cross multiply
    18,783.69x = 28,174.58 × 6,303.82
  4. Step 4: Simplify right side
    18,783.69x = 177,607,508.23
  5. Step 5: Solve for x
    x = 177,607,508.23/18,783.69
  6. Step 6: Final answer
    x = 9,455.41

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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.