Home / 20,861.60-31,297.04-6,071.68

Finding the Fourth Proportional to 20,861.60, 31,297.04 and 6,071.68

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Solution

The fourth proportional to 20,861.60, 31,297.04 and 6,071.68 is: 9,108.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,861.60 : 31,297.04 = 6,071.68 : x
  2. Step 2: Convert to fraction form
    20,861.60/31,297.04 = 6,071.68/x
  3. Step 3: Cross multiply
    20,861.60x = 31,297.04 × 6,071.68
  4. Step 4: Simplify right side
    20,861.60x = 190,025,611.83
  5. Step 5: Solve for x
    x = 190,025,611.83/20,861.60
  6. Step 6: Final answer
    x = 9,108.87

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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.