Home / 21,180.26-31,750.75-8,023.84

Finding the Fourth Proportional to 21,180.26, 31,750.75 and 8,023.84

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Solution

The fourth proportional to 21,180.26, 31,750.75 and 8,023.84 is: 12,028.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,180.26 : 31,750.75 = 8,023.84 : x
  2. Step 2: Convert to fraction form
    21,180.26/31,750.75 = 8,023.84/x
  3. Step 3: Cross multiply
    21,180.26x = 31,750.75 × 8,023.84
  4. Step 4: Simplify right side
    21,180.26x = 254,762,937.88
  5. Step 5: Solve for x
    x = 254,762,937.88/21,180.26
  6. Step 6: Final answer
    x = 12,028.32

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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.