Home / 20,874.48-28,796.74-15,200.43

Finding the Fourth Proportional to 20,874.48, 28,796.74 and 15,200.43

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Solution

The fourth proportional to 20,874.48, 28,796.74 and 15,200.43 is: 20,969.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,874.48 : 28,796.74 = 15,200.43 : x
  2. Step 2: Convert to fraction form
    20,874.48/28,796.74 = 15,200.43/x
  3. Step 3: Cross multiply
    20,874.48x = 28,796.74 × 15,200.43
  4. Step 4: Simplify right side
    20,874.48x = 437,722,830.60
  5. Step 5: Solve for x
    x = 437,722,830.60/20,874.48
  6. Step 6: Final answer
    x = 20,969.28

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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.