Home / 20,124.26-27,770.96-11,171.50

Finding the Fourth Proportional to 20,124.26, 27,770.96 and 11,171.50

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Solution

The fourth proportional to 20,124.26, 27,770.96 and 11,171.50 is: 15,416.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,124.26 : 27,770.96 = 11,171.50 : x
  2. Step 2: Convert to fraction form
    20,124.26/27,770.96 = 11,171.50/x
  3. Step 3: Cross multiply
    20,124.26x = 27,770.96 × 11,171.50
  4. Step 4: Simplify right side
    20,124.26x = 310,243,279.64
  5. Step 5: Solve for x
    x = 310,243,279.64/20,124.26
  6. Step 6: Final answer
    x = 15,416.38

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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.