Home / 13,221.48-19,830.30-3,859.02

Finding the Fourth Proportional to 13,221.48, 19,830.30 and 3,859.02

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Solution

The fourth proportional to 13,221.48, 19,830.30 and 3,859.02 is: 5,787.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,221.48 : 19,830.30 = 3,859.02 : x
  2. Step 2: Convert to fraction form
    13,221.48/19,830.30 = 3,859.02/x
  3. Step 3: Cross multiply
    13,221.48x = 19,830.30 × 3,859.02
  4. Step 4: Simplify right side
    13,221.48x = 76,525,524.31
  5. Step 5: Solve for x
    x = 76,525,524.31/13,221.48
  6. Step 6: Final answer
    x = 5,787.97

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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.