Home / 11,390.70-15,714.78-6,912.84

Finding the Fourth Proportional to 11,390.70, 15,714.78 and 6,912.84

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Solution

The fourth proportional to 11,390.70, 15,714.78 and 6,912.84 is: 9,537.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,390.70 : 15,714.78 = 6,912.84 : x
  2. Step 2: Convert to fraction form
    11,390.70/15,714.78 = 6,912.84/x
  3. Step 3: Cross multiply
    11,390.70x = 15,714.78 × 6,912.84
  4. Step 4: Simplify right side
    11,390.70x = 108,633,759.78
  5. Step 5: Solve for x
    x = 108,633,759.78/11,390.70
  6. Step 6: Final answer
    x = 9,537.06

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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.