Home / 20,889.60-31,339.04-6,099.64

Finding the Fourth Proportional to 20,889.60, 31,339.04 and 6,099.64

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Solution

The fourth proportional to 20,889.60, 31,339.04 and 6,099.64 is: 9,150.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,889.60 : 31,339.04 = 6,099.64 : x
  2. Step 2: Convert to fraction form
    20,889.60/31,339.04 = 6,099.64/x
  3. Step 3: Cross multiply
    20,889.60x = 31,339.04 × 6,099.64
  4. Step 4: Simplify right side
    20,889.60x = 191,156,861.95
  5. Step 5: Solve for x
    x = 191,156,861.95/20,889.60
  6. Step 6: Final answer
    x = 9,150.81

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1.5x scale

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.