Home / 20,600.28-28,428.36-11,168.82

Finding the Fourth Proportional to 20,600.28, 28,428.36 and 11,168.82

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Solution

The fourth proportional to 20,600.28, 28,428.36 and 11,168.82 is: 15,412.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,600.28 : 28,428.36 = 11,168.82 : x
  2. Step 2: Convert to fraction form
    20,600.28/28,428.36 = 11,168.82/x
  3. Step 3: Cross multiply
    20,600.28x = 28,428.36 × 11,168.82
  4. Step 4: Simplify right side
    20,600.28x = 317,511,235.74
  5. Step 5: Solve for x
    x = 317,511,235.74/20,600.28
  6. Step 6: Final answer
    x = 15,412.96

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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.