Home / 31,329.20-47,004.60-13,811.60

Finding the Fourth Proportional to 31,329.20, 47,004.60 and 13,811.60

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Solution

The fourth proportional to 31,329.20, 47,004.60 and 13,811.60 is: 20,722.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,329.20 : 47,004.60 = 13,811.60 : x
  2. Step 2: Convert to fraction form
    31,329.20/47,004.60 = 13,811.60/x
  3. Step 3: Cross multiply
    31,329.20x = 47,004.60 × 13,811.60
  4. Step 4: Simplify right side
    31,329.20x = 649,208,733.36
  5. Step 5: Solve for x
    x = 649,208,733.36/31,329.20
  6. Step 6: Final answer
    x = 20,722.16

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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.