Home / 17,187.40-25,785.90-8,422.60

Finding the Fourth Proportional to 17,187.40, 25,785.90 and 8,422.60

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Solution

The fourth proportional to 17,187.40, 25,785.90 and 8,422.60 is: 12,636.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,187.40 : 25,785.90 = 8,422.60 : x
  2. Step 2: Convert to fraction form
    17,187.40/25,785.90 = 8,422.60/x
  3. Step 3: Cross multiply
    17,187.40x = 25,785.90 × 8,422.60
  4. Step 4: Simplify right side
    17,187.40x = 217,184,321.34
  5. Step 5: Solve for x
    x = 217,184,321.34/17,187.40
  6. Step 6: Final answer
    x = 12,636.25

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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.