Home / 20,531.41-30,796.75-11,169.21

Finding the Fourth Proportional to 20,531.41, 30,796.75 and 11,169.21

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Solution

The fourth proportional to 20,531.41, 30,796.75 and 11,169.21 is: 16,753.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,531.41 : 30,796.75 = 11,169.21 : x
  2. Step 2: Convert to fraction form
    20,531.41/30,796.75 = 11,169.21/x
  3. Step 3: Cross multiply
    20,531.41x = 30,796.75 × 11,169.21
  4. Step 4: Simplify right side
    20,531.41x = 343,975,368.07
  5. Step 5: Solve for x
    x = 343,975,368.07/20,531.41
  6. Step 6: Final answer
    x = 16,753.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.