Home / 20,415.54-28,175.94-11,463.42

Finding the Fourth Proportional to 20,415.54, 28,175.94 and 11,463.42

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Solution

The fourth proportional to 20,415.54, 28,175.94 and 11,463.42 is: 15,820.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,415.54 : 28,175.94 = 11,463.42 : x
  2. Step 2: Convert to fraction form
    20,415.54/28,175.94 = 11,463.42/x
  3. Step 3: Cross multiply
    20,415.54x = 28,175.94 × 11,463.42
  4. Step 4: Simplify right side
    20,415.54x = 322,992,634.11
  5. Step 5: Solve for x
    x = 322,992,634.11/20,415.54
  6. Step 6: Final answer
    x = 15,820.92

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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.