Home / 15,213.42-20,991.96-8,498.79

Finding the Fourth Proportional to 15,213.42, 20,991.96 and 8,498.79

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Solution

The fourth proportional to 15,213.42, 20,991.96 and 8,498.79 is: 11,726.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,213.42 : 20,991.96 = 8,498.79 : x
  2. Step 2: Convert to fraction form
    15,213.42/20,991.96 = 8,498.79/x
  3. Step 3: Cross multiply
    15,213.42x = 20,991.96 × 8,498.79
  4. Step 4: Simplify right side
    15,213.42x = 178,406,259.73
  5. Step 5: Solve for x
    x = 178,406,259.73/15,213.42
  6. Step 6: Final answer
    x = 11,726.90

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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.