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Finding the Fourth Proportional to 12,147.95, 16,763.83 and 6,842.65

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Solution

The fourth proportional to 12,147.95, 16,763.83 and 6,842.65 is: 9,442.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,147.95 : 16,763.83 = 6,842.65 : x
  2. Step 2: Convert to fraction form
    12,147.95/16,763.83 = 6,842.65/x
  3. Step 3: Cross multiply
    12,147.95x = 16,763.83 × 6,842.65
  4. Step 4: Simplify right side
    12,147.95x = 114,709,021.35
  5. Step 5: Solve for x
    x = 114,709,021.35/12,147.95
  6. Step 6: Final answer
    x = 9,442.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.