Home / 20,887.88-28,826.79-11,935.17

Finding the Fourth Proportional to 20,887.88, 28,826.79 and 11,935.17

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Solution

The fourth proportional to 20,887.88, 28,826.79 and 11,935.17 is: 16,471.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,887.88 : 28,826.79 = 11,935.17 : x
  2. Step 2: Convert to fraction form
    20,887.88/28,826.79 = 11,935.17/x
  3. Step 3: Cross multiply
    20,887.88x = 28,826.79 × 11,935.17
  4. Step 4: Simplify right side
    20,887.88x = 344,052,675.52
  5. Step 5: Solve for x
    x = 344,052,675.52/20,887.88
  6. Step 6: Final answer
    x = 16,471.41

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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.