Home / 20,850.03-28,772.15-12,893.13

Finding the Fourth Proportional to 20,850.03, 28,772.15 and 12,893.13

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Solution

The fourth proportional to 20,850.03, 28,772.15 and 12,893.13 is: 17,791.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,850.03 : 28,772.15 = 12,893.13 : x
  2. Step 2: Convert to fraction form
    20,850.03/28,772.15 = 12,893.13/x
  3. Step 3: Cross multiply
    20,850.03x = 28,772.15 × 12,893.13
  4. Step 4: Simplify right side
    20,850.03x = 370,963,005.86
  5. Step 5: Solve for x
    x = 370,963,005.86/20,850.03
  6. Step 6: Final answer
    x = 17,791.97

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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.