Home / 20,380.35-28,111.94-14,723.42

Finding the Fourth Proportional to 20,380.35, 28,111.94 and 14,723.42

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Solution

The fourth proportional to 20,380.35, 28,111.94 and 14,723.42 is: 20,308.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,380.35 : 28,111.94 = 14,723.42 : x
  2. Step 2: Convert to fraction form
    20,380.35/28,111.94 = 14,723.42/x
  3. Step 3: Cross multiply
    20,380.35x = 28,111.94 × 14,723.42
  4. Step 4: Simplify right side
    20,380.35x = 413,903,740.67
  5. Step 5: Solve for x
    x = 413,903,740.67/20,380.35
  6. Step 6: Final answer
    x = 20,308.96

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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.