Home / 34,367.20-51,520.80-13,321.60

Finding the Fourth Proportional to 34,367.20, 51,520.80 and 13,321.60

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Solution

The fourth proportional to 34,367.20, 51,520.80 and 13,321.60 is: 19,970.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,367.20 : 51,520.80 = 13,321.60 : x
  2. Step 2: Convert to fraction form
    34,367.20/51,520.80 = 13,321.60/x
  3. Step 3: Cross multiply
    34,367.20x = 51,520.80 × 13,321.60
  4. Step 4: Simplify right side
    34,367.20x = 686,339,489.28
  5. Step 5: Solve for x
    x = 686,339,489.28/34,367.20
  6. Step 6: Final answer
    x = 19,970.77

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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.