Home / 20,672.88-28,529.18-11,242.05

Finding the Fourth Proportional to 20,672.88, 28,529.18 and 11,242.05

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Solution

The fourth proportional to 20,672.88, 28,529.18 and 11,242.05 is: 15,514.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,672.88 : 28,529.18 = 11,242.05 : x
  2. Step 2: Convert to fraction form
    20,672.88/28,529.18 = 11,242.05/x
  3. Step 3: Cross multiply
    20,672.88x = 28,529.18 × 11,242.05
  4. Step 4: Simplify right side
    20,672.88x = 320,726,468.02
  5. Step 5: Solve for x
    x = 320,726,468.02/20,672.88
  6. Step 6: Final answer
    x = 15,514.36

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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.