Home / 20,960.82-28,932.72-13,427.46

Finding the Fourth Proportional to 20,960.82, 28,932.72 and 13,427.46

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Solution

The fourth proportional to 20,960.82, 28,932.72 and 13,427.46 is: 18,534.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,960.82 : 28,932.72 = 13,427.46 : x
  2. Step 2: Convert to fraction form
    20,960.82/28,932.72 = 13,427.46/x
  3. Step 3: Cross multiply
    20,960.82x = 28,932.72 × 13,427.46
  4. Step 4: Simplify right side
    20,960.82x = 388,492,940.49
  5. Step 5: Solve for x
    x = 388,492,940.49/20,960.82
  6. Step 6: Final answer
    x = 18,534.24

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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.