Home / 19,866.43-29,825.69-13,321.90

Finding the Fourth Proportional to 19,866.43, 29,825.69 and 13,321.90

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Solution

The fourth proportional to 19,866.43, 29,825.69 and 13,321.90 is: 20,000.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,866.43 : 29,825.69 = 13,321.90 : x
  2. Step 2: Convert to fraction form
    19,866.43/29,825.69 = 13,321.90/x
  3. Step 3: Cross multiply
    19,866.43x = 29,825.69 × 13,321.90
  4. Step 4: Simplify right side
    19,866.43x = 397,334,859.61
  5. Step 5: Solve for x
    x = 397,334,859.61/19,866.43
  6. Step 6: Final answer
    x = 20,000.32

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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.