Home / 31,997.36-47,897.64-20,880.12

Finding the Fourth Proportional to 31,997.36, 47,897.64 and 20,880.12

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Solution

The fourth proportional to 31,997.36, 47,897.64 and 20,880.12 is: 31,255.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,997.36 : 47,897.64 = 20,880.12 : x
  2. Step 2: Convert to fraction form
    31,997.36/47,897.64 = 20,880.12/x
  3. Step 3: Cross multiply
    31,997.36x = 47,897.64 × 20,880.12
  4. Step 4: Simplify right side
    31,997.36x = 1,000,108,470.92
  5. Step 5: Solve for x
    x = 1,000,108,470.92/31,997.36
  6. Step 6: Final answer
    x = 31,255.97

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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.