Home / 20,859.29-28,789.83-16,312.97

Finding the Fourth Proportional to 20,859.29, 28,789.83 and 16,312.97

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Solution

The fourth proportional to 20,859.29, 28,789.83 and 16,312.97 is: 22,515.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,859.29 : 28,789.83 = 16,312.97 : x
  2. Step 2: Convert to fraction form
    20,859.29/28,789.83 = 16,312.97/x
  3. Step 3: Cross multiply
    20,859.29x = 28,789.83 × 16,312.97
  4. Step 4: Simplify right side
    20,859.29x = 469,647,633.10
  5. Step 5: Solve for x
    x = 469,647,633.10/20,859.29
  6. Step 6: Final answer
    x = 22,515.03

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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.