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Finding the Fourth Proportional to 11,295.69, 16,943.71 and 4,278.99

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Solution

The fourth proportional to 11,295.69, 16,943.71 and 4,278.99 is: 6,418.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,295.69 : 16,943.71 = 4,278.99 : x
  2. Step 2: Convert to fraction form
    11,295.69/16,943.71 = 4,278.99/x
  3. Step 3: Cross multiply
    11,295.69x = 16,943.71 × 4,278.99
  4. Step 4: Simplify right side
    11,295.69x = 72,501,965.65
  5. Step 5: Solve for x
    x = 72,501,965.65/11,295.69
  6. Step 6: Final answer
    x = 6,418.55

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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.