Home / 21,087.62-31,631.42-5,505.24

Finding the Fourth Proportional to 21,087.62, 31,631.42 and 5,505.24

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Solution

The fourth proportional to 21,087.62, 31,631.42 and 5,505.24 is: 8,257.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,087.62 : 31,631.42 = 5,505.24 : x
  2. Step 2: Convert to fraction form
    21,087.62/31,631.42 = 5,505.24/x
  3. Step 3: Cross multiply
    21,087.62x = 31,631.42 × 5,505.24
  4. Step 4: Simplify right side
    21,087.62x = 174,138,609.80
  5. Step 5: Solve for x
    x = 174,138,609.80/21,087.62
  6. Step 6: Final answer
    x = 8,257.86

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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.