Home / 20,935.58-28,891.16-11,375.39

Finding the Fourth Proportional to 20,935.58, 28,891.16 and 11,375.39

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Solution

The fourth proportional to 20,935.58, 28,891.16 and 11,375.39 is: 15,698.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,935.58 : 28,891.16 = 11,375.39 : x
  2. Step 2: Convert to fraction form
    20,935.58/28,891.16 = 11,375.39/x
  3. Step 3: Cross multiply
    20,935.58x = 28,891.16 × 11,375.39
  4. Step 4: Simplify right side
    20,935.58x = 328,648,011.22
  5. Step 5: Solve for x
    x = 328,648,011.22/20,935.58
  6. Step 6: Final answer
    x = 15,698.06

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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.