Home / 19,970.82-29,955.96-5,179.68

Finding the Fourth Proportional to 19,970.82, 29,955.96 and 5,179.68

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Solution

The fourth proportional to 19,970.82, 29,955.96 and 5,179.68 is: 7,769.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,970.82 : 29,955.96 = 5,179.68 : x
  2. Step 2: Convert to fraction form
    19,970.82/29,955.96 = 5,179.68/x
  3. Step 3: Cross multiply
    19,970.82x = 29,955.96 × 5,179.68
  4. Step 4: Simplify right side
    19,970.82x = 155,162,286.89
  5. Step 5: Solve for x
    x = 155,162,286.89/19,970.82
  6. Step 6: Final answer
    x = 7,769.45

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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.