Home / 19,579.12-29,365.03-6,429.78

Finding the Fourth Proportional to 19,579.12, 29,365.03 and 6,429.78

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Solution

The fourth proportional to 19,579.12, 29,365.03 and 6,429.78 is: 9,643.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,579.12 : 29,365.03 = 6,429.78 : x
  2. Step 2: Convert to fraction form
    19,579.12/29,365.03 = 6,429.78/x
  3. Step 3: Cross multiply
    19,579.12x = 29,365.03 × 6,429.78
  4. Step 4: Simplify right side
    19,579.12x = 188,810,690.63
  5. Step 5: Solve for x
    x = 188,810,690.63/19,579.12
  6. Step 6: Final answer
    x = 9,643.47

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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.