Home / 18,947.77-28,434.38-11,932.63

Finding the Fourth Proportional to 18,947.77, 28,434.38 and 11,932.63

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Solution

The fourth proportional to 18,947.77, 28,434.38 and 11,932.63 is: 17,906.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,947.77 : 28,434.38 = 11,932.63 : x
  2. Step 2: Convert to fraction form
    18,947.77/28,434.38 = 11,932.63/x
  3. Step 3: Cross multiply
    18,947.77x = 28,434.38 × 11,932.63
  4. Step 4: Simplify right side
    18,947.77x = 339,296,935.82
  5. Step 5: Solve for x
    x = 339,296,935.82/18,947.77
  6. Step 6: Final answer
    x = 17,906.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.