Home / 20,884.80-28,822.08-11,454.24

Finding the Fourth Proportional to 20,884.80, 28,822.08 and 11,454.24

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Solution

The fourth proportional to 20,884.80, 28,822.08 and 11,454.24 is: 15,807.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,884.80 : 28,822.08 = 11,454.24 : x
  2. Step 2: Convert to fraction form
    20,884.80/28,822.08 = 11,454.24/x
  3. Step 3: Cross multiply
    20,884.80x = 28,822.08 × 11,454.24
  4. Step 4: Simplify right side
    20,884.80x = 330,135,021.62
  5. Step 5: Solve for x
    x = 330,135,021.62/20,884.80
  6. Step 6: Final answer
    x = 15,807.43

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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.