Home / 21,159.62-29,190.88-13,604.55

Finding the Fourth Proportional to 21,159.62, 29,190.88 and 13,604.55

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Solution

The fourth proportional to 21,159.62, 29,190.88 and 13,604.55 is: 18,768.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,159.62 : 29,190.88 = 13,604.55 : x
  2. Step 2: Convert to fraction form
    21,159.62/29,190.88 = 13,604.55/x
  3. Step 3: Cross multiply
    21,159.62x = 29,190.88 × 13,604.55
  4. Step 4: Simplify right side
    21,159.62x = 397,128,786.50
  5. Step 5: Solve for x
    x = 397,128,786.50/21,159.62
  6. Step 6: Final answer
    x = 18,768.24

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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.