Home / 13,219.72-19,832.94-3,985.48

Finding the Fourth Proportional to 13,219.72, 19,832.94 and 3,985.48

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Solution

The fourth proportional to 13,219.72, 19,832.94 and 3,985.48 is: 5,979.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,219.72 : 19,832.94 = 3,985.48 : x
  2. Step 2: Convert to fraction form
    13,219.72/19,832.94 = 3,985.48/x
  3. Step 3: Cross multiply
    13,219.72x = 19,832.94 × 3,985.48
  4. Step 4: Simplify right side
    13,219.72x = 79,043,785.71
  5. Step 5: Solve for x
    x = 79,043,785.71/13,219.72
  6. Step 6: Final answer
    x = 5,979.23

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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.