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Finding the Fourth Proportional to 12,208.79, 16,848.14 and 6,619.79

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Solution

The fourth proportional to 12,208.79, 16,848.14 and 6,619.79 is: 9,135.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,208.79 : 16,848.14 = 6,619.79 : x
  2. Step 2: Convert to fraction form
    12,208.79/16,848.14 = 6,619.79/x
  3. Step 3: Cross multiply
    12,208.79x = 16,848.14 × 6,619.79
  4. Step 4: Simplify right side
    12,208.79x = 111,531,157.71
  5. Step 5: Solve for x
    x = 111,531,157.71/12,208.79
  6. Step 6: Final answer
    x = 9,135.31

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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.