Home / 20,108.60-30,141.30-7,623.80

Finding the Fourth Proportional to 20,108.60, 30,141.30 and 7,623.80

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Solution

The fourth proportional to 20,108.60, 30,141.30 and 7,623.80 is: 11,427.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,108.60 : 30,141.30 = 7,623.80 : x
  2. Step 2: Convert to fraction form
    20,108.60/30,141.30 = 7,623.80/x
  3. Step 3: Cross multiply
    20,108.60x = 30,141.30 × 7,623.80
  4. Step 4: Simplify right side
    20,108.60x = 229,791,242.94
  5. Step 5: Solve for x
    x = 229,791,242.94/20,108.60
  6. Step 6: Final answer
    x = 11,427.51

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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.