Home / 31,982.64-47,887.86-20,861.76

Finding the Fourth Proportional to 31,982.64, 47,887.86 and 20,861.76

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Solution

The fourth proportional to 31,982.64, 47,887.86 and 20,861.76 is: 31,236.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,982.64 : 47,887.86 = 20,861.76 : x
  2. Step 2: Convert to fraction form
    31,982.64/47,887.86 = 20,861.76/x
  3. Step 3: Cross multiply
    31,982.64x = 47,887.86 × 20,861.76
  4. Step 4: Simplify right side
    31,982.64x = 999,025,042.23
  5. Step 5: Solve for x
    x = 999,025,042.23/31,982.64
  6. Step 6: Final answer
    x = 31,236.48

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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.