Home / 20,935.95-28,891.73-11,375.91

Finding the Fourth Proportional to 20,935.95, 28,891.73 and 11,375.91

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Solution

The fourth proportional to 20,935.95, 28,891.73 and 11,375.91 is: 15,698.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,935.95 : 28,891.73 = 11,375.91 : x
  2. Step 2: Convert to fraction form
    20,935.95/28,891.73 = 11,375.91/x
  3. Step 3: Cross multiply
    20,935.95x = 28,891.73 × 11,375.91
  4. Step 4: Simplify right side
    20,935.95x = 328,669,720.22
  5. Step 5: Solve for x
    x = 328,669,720.22/20,935.95
  6. Step 6: Final answer
    x = 15,698.82

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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.