Home / 20,634.88-28,475.20-11,683.20

Finding the Fourth Proportional to 20,634.88, 28,475.20 and 11,683.20

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Solution

The fourth proportional to 20,634.88, 28,475.20 and 11,683.20 is: 16,122.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,634.88 : 28,475.20 = 11,683.20 : x
  2. Step 2: Convert to fraction form
    20,634.88/28,475.20 = 11,683.20/x
  3. Step 3: Cross multiply
    20,634.88x = 28,475.20 × 11,683.20
  4. Step 4: Simplify right side
    20,634.88x = 332,681,456.64
  5. Step 5: Solve for x
    x = 332,681,456.64/20,634.88
  6. Step 6: Final answer
    x = 16,122.29

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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.