Home / 15,221.21-20,997.59-10,185.63

Finding the Fourth Proportional to 15,221.21, 20,997.59 and 10,185.63

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Solution

The fourth proportional to 15,221.21, 20,997.59 and 10,185.63 is: 14,051.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,221.21 : 20,997.59 = 10,185.63 : x
  2. Step 2: Convert to fraction form
    15,221.21/20,997.59 = 10,185.63/x
  3. Step 3: Cross multiply
    15,221.21x = 20,997.59 × 10,185.63
  4. Step 4: Simplify right side
    15,221.21x = 213,873,631.70
  5. Step 5: Solve for x
    x = 213,873,631.70/15,221.21
  6. Step 6: Final answer
    x = 14,051.03

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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.