Home / 12,679.31-19,020.06-3,319.29

Finding the Fourth Proportional to 12,679.31, 19,020.06 and 3,319.29

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Solution

The fourth proportional to 12,679.31, 19,020.06 and 3,319.29 is: 4,979.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,679.31 : 19,020.06 = 3,319.29 : x
  2. Step 2: Convert to fraction form
    12,679.31/19,020.06 = 3,319.29/x
  3. Step 3: Cross multiply
    12,679.31x = 19,020.06 × 3,319.29
  4. Step 4: Simplify right side
    12,679.31x = 63,133,094.96
  5. Step 5: Solve for x
    x = 63,133,094.96/12,679.31
  6. Step 6: Final answer
    x = 4,979.22

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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.