Home / 20,377.56-28,119.08-11,425.44

Finding the Fourth Proportional to 20,377.56, 28,119.08 and 11,425.44

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Solution

The fourth proportional to 20,377.56, 28,119.08 and 11,425.44 is: 15,766.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,377.56 : 28,119.08 = 11,425.44 : x
  2. Step 2: Convert to fraction form
    20,377.56/28,119.08 = 11,425.44/x
  3. Step 3: Cross multiply
    20,377.56x = 28,119.08 × 11,425.44
  4. Step 4: Simplify right side
    20,377.56x = 321,272,861.40
  5. Step 5: Solve for x
    x = 321,272,861.40/20,377.56
  6. Step 6: Final answer
    x = 15,766.01

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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.