Home / 17,139.20-25,708.80-5,453.60

Finding the Fourth Proportional to 17,139.20, 25,708.80 and 5,453.60

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Solution

The fourth proportional to 17,139.20, 25,708.80 and 5,453.60 is: 8,180.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,139.20 : 25,708.80 = 5,453.60 : x
  2. Step 2: Convert to fraction form
    17,139.20/25,708.80 = 5,453.60/x
  3. Step 3: Cross multiply
    17,139.20x = 25,708.80 × 5,453.60
  4. Step 4: Simplify right side
    17,139.20x = 140,205,511.68
  5. Step 5: Solve for x
    x = 140,205,511.68/17,139.20
  6. Step 6: Final answer
    x = 8,180.40

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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.