Home / 21,604.04-29,815.98-13,645.88

Finding the Fourth Proportional to 21,604.04, 29,815.98 and 13,645.88

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Solution

The fourth proportional to 21,604.04, 29,815.98 and 13,645.88 is: 18,832.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,604.04 : 29,815.98 = 13,645.88 : x
  2. Step 2: Convert to fraction form
    21,604.04/29,815.98 = 13,645.88/x
  3. Step 3: Cross multiply
    21,604.04x = 29,815.98 × 13,645.88
  4. Step 4: Simplify right side
    21,604.04x = 406,865,285.16
  5. Step 5: Solve for x
    x = 406,865,285.16/21,604.04
  6. Step 6: Final answer
    x = 18,832.83

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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.