Home / 20,471.88-28,267.62-13,305.36

Finding the Fourth Proportional to 20,471.88, 28,267.62 and 13,305.36

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Solution

The fourth proportional to 20,471.88, 28,267.62 and 13,305.36 is: 18,372.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,471.88 : 28,267.62 = 13,305.36 : x
  2. Step 2: Convert to fraction form
    20,471.88/28,267.62 = 13,305.36/x
  3. Step 3: Cross multiply
    20,471.88x = 28,267.62 × 13,305.36
  4. Step 4: Simplify right side
    20,471.88x = 376,110,860.44
  5. Step 5: Solve for x
    x = 376,110,860.44/20,471.88
  6. Step 6: Final answer
    x = 18,372.07

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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.