Home / 20,828.22-31,242.33-5,247.06

Finding the Fourth Proportional to 20,828.22, 31,242.33 and 5,247.06

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Solution

The fourth proportional to 20,828.22, 31,242.33 and 5,247.06 is: 7,870.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,828.22 : 31,242.33 = 5,247.06 : x
  2. Step 2: Convert to fraction form
    20,828.22/31,242.33 = 5,247.06/x
  3. Step 3: Cross multiply
    20,828.22x = 31,242.33 × 5,247.06
  4. Step 4: Simplify right side
    20,828.22x = 163,930,380.05
  5. Step 5: Solve for x
    x = 163,930,380.05/20,828.22
  6. Step 6: Final answer
    x = 7,870.59

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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.