Home / 20,630.36-30,927.79-8,773.28

Finding the Fourth Proportional to 20,630.36, 30,927.79 and 8,773.28

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Solution

The fourth proportional to 20,630.36, 30,927.79 and 8,773.28 is: 13,152.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,630.36 : 30,927.79 = 8,773.28 : x
  2. Step 2: Convert to fraction form
    20,630.36/30,927.79 = 8,773.28/x
  3. Step 3: Cross multiply
    20,630.36x = 30,927.79 × 8,773.28
  4. Step 4: Simplify right side
    20,630.36x = 271,337,984.88
  5. Step 5: Solve for x
    x = 271,337,984.88/20,630.36
  6. Step 6: Final answer
    x = 13,152.36

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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.