Home / 20,376.26-28,120.58-11,424.34

Finding the Fourth Proportional to 20,376.26, 28,120.58 and 11,424.34

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Solution

The fourth proportional to 20,376.26, 28,120.58 and 11,424.34 is: 15,766.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,376.26 : 28,120.58 = 11,424.34 : x
  2. Step 2: Convert to fraction form
    20,376.26/28,120.58 = 11,424.34/x
  3. Step 3: Cross multiply
    20,376.26x = 28,120.58 × 11,424.34
  4. Step 4: Simplify right side
    20,376.26x = 321,259,025.18
  5. Step 5: Solve for x
    x = 321,259,025.18/20,376.26
  6. Step 6: Final answer
    x = 15,766.34

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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.