Home / 20,935.86-28,891.44-11,983.14

Finding the Fourth Proportional to 20,935.86, 28,891.44 and 11,983.14

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Solution

The fourth proportional to 20,935.86, 28,891.44 and 11,983.14 is: 16,536.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,935.86 : 28,891.44 = 11,983.14 : x
  2. Step 2: Convert to fraction form
    20,935.86/28,891.44 = 11,983.14/x
  3. Step 3: Cross multiply
    20,935.86x = 28,891.44 × 11,983.14
  4. Step 4: Simplify right side
    20,935.86x = 346,210,170.32
  5. Step 5: Solve for x
    x = 346,210,170.32/20,935.86
  6. Step 6: Final answer
    x = 16,536.71

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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.