Home / 23,189.40-34,786.80-8,405.28

Finding the Fourth Proportional to 23,189.40, 34,786.80 and 8,405.28

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Solution

The fourth proportional to 23,189.40, 34,786.80 and 8,405.28 is: 12,608.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,189.40 : 34,786.80 = 8,405.28 : x
  2. Step 2: Convert to fraction form
    23,189.40/34,786.80 = 8,405.28/x
  3. Step 3: Cross multiply
    23,189.40x = 34,786.80 × 8,405.28
  4. Step 4: Simplify right side
    23,189.40x = 292,392,794.30
  5. Step 5: Solve for x
    x = 292,392,794.30/23,189.40
  6. Step 6: Final answer
    x = 12,608.90

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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.