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Finding the Fourth Proportional to 12,208.65, 16,848.12 and 6,619.65

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Solution

The fourth proportional to 12,208.65, 16,848.12 and 6,619.65 is: 9,135.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,208.65 : 16,848.12 = 6,619.65 : x
  2. Step 2: Convert to fraction form
    12,208.65/16,848.12 = 6,619.65/x
  3. Step 3: Cross multiply
    12,208.65x = 16,848.12 × 6,619.65
  4. Step 4: Simplify right side
    12,208.65x = 111,528,657.56
  5. Step 5: Solve for x
    x = 111,528,657.56/12,208.65
  6. Step 6: Final answer
    x = 9,135.22

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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.