Home / 21,169.04-29,200.40-13,999.04

Finding the Fourth Proportional to 21,169.04, 29,200.40 and 13,999.04

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Solution

The fourth proportional to 21,169.04, 29,200.40 and 13,999.04 is: 19,310.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,169.04 : 29,200.40 = 13,999.04 : x
  2. Step 2: Convert to fraction form
    21,169.04/29,200.40 = 13,999.04/x
  3. Step 3: Cross multiply
    21,169.04x = 29,200.40 × 13,999.04
  4. Step 4: Simplify right side
    21,169.04x = 408,777,567.62
  5. Step 5: Solve for x
    x = 408,777,567.62/21,169.04
  6. Step 6: Final answer
    x = 19,310.16

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1.5x scale

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.