Home / 13,953.06-20,940.12-7,380.72

Finding the Fourth Proportional to 13,953.06, 20,940.12 and 7,380.72

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Solution

The fourth proportional to 13,953.06, 20,940.12 and 7,380.72 is: 11,076.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,953.06 : 20,940.12 = 7,380.72 : x
  2. Step 2: Convert to fraction form
    13,953.06/20,940.12 = 7,380.72/x
  3. Step 3: Cross multiply
    13,953.06x = 20,940.12 × 7,380.72
  4. Step 4: Simplify right side
    13,953.06x = 154,553,162.49
  5. Step 5: Solve for x
    x = 154,553,162.49/13,953.06
  6. Step 6: Final answer
    x = 11,076.65

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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.