Home / 20,955.05-31,432.56-6,163.96

Finding the Fourth Proportional to 20,955.05, 31,432.56 and 6,163.96

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Solution

The fourth proportional to 20,955.05, 31,432.56 and 6,163.96 is: 9,245.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,955.05 : 31,432.56 = 6,163.96 : x
  2. Step 2: Convert to fraction form
    20,955.05/31,432.56 = 6,163.96/x
  3. Step 3: Cross multiply
    20,955.05x = 31,432.56 × 6,163.96
  4. Step 4: Simplify right side
    20,955.05x = 193,749,088.18
  5. Step 5: Solve for x
    x = 193,749,088.18/20,955.05
  6. Step 6: Final answer
    x = 9,245.94

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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.