Home / 13,680.82-20,521.32-11,826.46

Finding the Fourth Proportional to 13,680.82, 20,521.32 and 11,826.46

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Solution

The fourth proportional to 13,680.82, 20,521.32 and 11,826.46 is: 17,739.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,680.82 : 20,521.32 = 11,826.46 : x
  2. Step 2: Convert to fraction form
    13,680.82/20,521.32 = 11,826.46/x
  3. Step 3: Cross multiply
    13,680.82x = 20,521.32 × 11,826.46
  4. Step 4: Simplify right side
    13,680.82x = 242,694,570.13
  5. Step 5: Solve for x
    x = 242,694,570.13/13,680.82
  6. Step 6: Final answer
    x = 17,739.77

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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.