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Finding the Fourth Proportional to 12,365.69, 18,553.68 and 6,818.59

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Solution

The fourth proportional to 12,365.69, 18,553.68 and 6,818.59 is: 10,230.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,365.69 : 18,553.68 = 6,818.59 : x
  2. Step 2: Convert to fraction form
    12,365.69/18,553.68 = 6,818.59/x
  3. Step 3: Cross multiply
    12,365.69x = 18,553.68 × 6,818.59
  4. Step 4: Simplify right side
    12,365.69x = 126,509,890.53
  5. Step 5: Solve for x
    x = 126,509,890.53/12,365.69
  6. Step 6: Final answer
    x = 10,230.72

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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.