Home / 19,579.80-29,372.77-6,429.18

Finding the Fourth Proportional to 19,579.80, 29,372.77 and 6,429.18

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Solution

The fourth proportional to 19,579.80, 29,372.77 and 6,429.18 is: 9,644.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,579.80 : 29,372.77 = 6,429.18 : x
  2. Step 2: Convert to fraction form
    19,579.80/29,372.77 = 6,429.18/x
  3. Step 3: Cross multiply
    19,579.80x = 29,372.77 × 6,429.18
  4. Step 4: Simplify right side
    19,579.80x = 188,842,825.43
  5. Step 5: Solve for x
    x = 188,842,825.43/19,579.80
  6. Step 6: Final answer
    x = 9,644.78

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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.