Home / 20,835.76-31,170.72-18,094.72

Finding the Fourth Proportional to 20,835.76, 31,170.72 and 18,094.72

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Solution

The fourth proportional to 20,835.76, 31,170.72 and 18,094.72 is: 27,070.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,835.76 : 31,170.72 = 18,094.72 : x
  2. Step 2: Convert to fraction form
    20,835.76/31,170.72 = 18,094.72/x
  3. Step 3: Cross multiply
    20,835.76x = 31,170.72 × 18,094.72
  4. Step 4: Simplify right side
    20,835.76x = 564,025,450.60
  5. Step 5: Solve for x
    x = 564,025,450.60/20,835.76
  6. Step 6: Final answer
    x = 27,070.07

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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.