Home / 21,057.84-31,584.24-5,475.06

Finding the Fourth Proportional to 21,057.84, 31,584.24 and 5,475.06

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Solution

The fourth proportional to 21,057.84, 31,584.24 and 5,475.06 is: 8,211.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,057.84 : 31,584.24 = 5,475.06 : x
  2. Step 2: Convert to fraction form
    21,057.84/31,584.24 = 5,475.06/x
  3. Step 3: Cross multiply
    21,057.84x = 31,584.24 × 5,475.06
  4. Step 4: Simplify right side
    21,057.84x = 172,925,609.05
  5. Step 5: Solve for x
    x = 172,925,609.05/21,057.84
  6. Step 6: Final answer
    x = 8,211.93

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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.