Home / 21,705.75-29,933.42-14,157.90

Finding the Fourth Proportional to 21,705.75, 29,933.42 and 14,157.90

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Solution

The fourth proportional to 21,705.75, 29,933.42 and 14,157.90 is: 19,524.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,705.75 : 29,933.42 = 14,157.90 : x
  2. Step 2: Convert to fraction form
    21,705.75/29,933.42 = 14,157.90/x
  3. Step 3: Cross multiply
    21,705.75x = 29,933.42 × 14,157.90
  4. Step 4: Simplify right side
    21,705.75x = 423,794,296.23
  5. Step 5: Solve for x
    x = 423,794,296.23/21,705.75
  6. Step 6: Final answer
    x = 19,524.52

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.