Home / 31,661.28-47,462.76-14,121.54

Finding the Fourth Proportional to 31,661.28, 47,462.76 and 14,121.54

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Solution

The fourth proportional to 31,661.28, 47,462.76 and 14,121.54 is: 21,169.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,661.28 : 47,462.76 = 14,121.54 : x
  2. Step 2: Convert to fraction form
    31,661.28/47,462.76 = 14,121.54/x
  3. Step 3: Cross multiply
    31,661.28x = 47,462.76 × 14,121.54
  4. Step 4: Simplify right side
    31,661.28x = 670,247,263.85
  5. Step 5: Solve for x
    x = 670,247,263.85/31,661.28
  6. Step 6: Final answer
    x = 21,169.30

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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.