Home / 12,979.89-19,457.52-4,208.64

Finding the Fourth Proportional to 12,979.89, 19,457.52 and 4,208.64

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Solution

The fourth proportional to 12,979.89, 19,457.52 and 4,208.64 is: 6,308.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,979.89 : 19,457.52 = 4,208.64 : x
  2. Step 2: Convert to fraction form
    12,979.89/19,457.52 = 4,208.64/x
  3. Step 3: Cross multiply
    12,979.89x = 19,457.52 × 4,208.64
  4. Step 4: Simplify right side
    12,979.89x = 81,889,696.97
  5. Step 5: Solve for x
    x = 81,889,696.97/12,979.89
  6. Step 6: Final answer
    x = 6,308.97

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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.