Home / 11,378.22-17,078.40-8,700.90

Finding the Fourth Proportional to 11,378.22, 17,078.40 and 8,700.90

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Solution

The fourth proportional to 11,378.22, 17,078.40 and 8,700.90 is: 13,059.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,378.22 : 17,078.40 = 8,700.90 : x
  2. Step 2: Convert to fraction form
    11,378.22/17,078.40 = 8,700.90/x
  3. Step 3: Cross multiply
    11,378.22x = 17,078.40 × 8,700.90
  4. Step 4: Simplify right side
    11,378.22x = 148,597,450.56
  5. Step 5: Solve for x
    x = 148,597,450.56/11,378.22
  6. Step 6: Final answer
    x = 13,059.82

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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.