Home / 20,713.42-28,575.43-13,996.60

Finding the Fourth Proportional to 20,713.42, 28,575.43 and 13,996.60

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Solution

The fourth proportional to 20,713.42, 28,575.43 and 13,996.60 is: 19,309.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,713.42 : 28,575.43 = 13,996.60 : x
  2. Step 2: Convert to fraction form
    20,713.42/28,575.43 = 13,996.60/x
  3. Step 3: Cross multiply
    20,713.42x = 28,575.43 × 13,996.60
  4. Step 4: Simplify right side
    20,713.42x = 399,958,793.56
  5. Step 5: Solve for x
    x = 399,958,793.56/20,713.42
  6. Step 6: Final answer
    x = 19,309.16

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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.