Home / 20,858.29-28,788.45-16,311.97

Finding the Fourth Proportional to 20,858.29, 28,788.45 and 16,311.97

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Solution

The fourth proportional to 20,858.29, 28,788.45 and 16,311.97 is: 22,513.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,858.29 : 28,788.45 = 16,311.97 : x
  2. Step 2: Convert to fraction form
    20,858.29/28,788.45 = 16,311.97/x
  3. Step 3: Cross multiply
    20,858.29x = 28,788.45 × 16,311.97
  4. Step 4: Simplify right side
    20,858.29x = 469,596,107.24
  5. Step 5: Solve for x
    x = 469,596,107.24/20,858.29
  6. Step 6: Final answer
    x = 22,513.64

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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.