Home / 28,740.96-39,649.50-20,770.56

Finding the Fourth Proportional to 28,740.96, 39,649.50 and 20,770.56

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Solution

The fourth proportional to 28,740.96, 39,649.50 and 20,770.56 is: 28,653.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,740.96 : 39,649.50 = 20,770.56 : x
  2. Step 2: Convert to fraction form
    28,740.96/39,649.50 = 20,770.56/x
  3. Step 3: Cross multiply
    28,740.96x = 39,649.50 × 20,770.56
  4. Step 4: Simplify right side
    28,740.96x = 823,542,318.72
  5. Step 5: Solve for x
    x = 823,542,318.72/28,740.96
  6. Step 6: Final answer
    x = 28,653.96

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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.