Home / 11,157.70-15,397.78-6,121.83

Finding the Fourth Proportional to 11,157.70, 15,397.78 and 6,121.83

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Solution

The fourth proportional to 11,157.70, 15,397.78 and 6,121.83 is: 8,448.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,157.70 : 15,397.78 = 6,121.83 : x
  2. Step 2: Convert to fraction form
    11,157.70/15,397.78 = 6,121.83/x
  3. Step 3: Cross multiply
    11,157.70x = 15,397.78 × 6,121.83
  4. Step 4: Simplify right side
    11,157.70x = 94,262,576.23
  5. Step 5: Solve for x
    x = 94,262,576.23/11,157.70
  6. Step 6: Final answer
    x = 8,448.21

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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.