Home / 13,219.65-19,829.34-3,985.65

Finding the Fourth Proportional to 13,219.65, 19,829.34 and 3,985.65

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Solution

The fourth proportional to 13,219.65, 19,829.34 and 3,985.65 is: 5,978.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,219.65 : 19,829.34 = 3,985.65 : x
  2. Step 2: Convert to fraction form
    13,219.65/19,829.34 = 3,985.65/x
  3. Step 3: Cross multiply
    13,219.65x = 19,829.34 × 3,985.65
  4. Step 4: Simplify right side
    13,219.65x = 79,032,808.97
  5. Step 5: Solve for x
    x = 79,032,808.97/13,219.65
  6. Step 6: Final answer
    x = 5,978.43

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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.