Home / 12,106.56-18,151.20-7,485.12

Finding the Fourth Proportional to 12,106.56, 18,151.20 and 7,485.12

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Solution

The fourth proportional to 12,106.56, 18,151.20 and 7,485.12 is: 11,222.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,106.56 : 18,151.20 = 7,485.12 : x
  2. Step 2: Convert to fraction form
    12,106.56/18,151.20 = 7,485.12/x
  3. Step 3: Cross multiply
    12,106.56x = 18,151.20 × 7,485.12
  4. Step 4: Simplify right side
    12,106.56x = 135,863,910.14
  5. Step 5: Solve for x
    x = 135,863,910.14/12,106.56
  6. Step 6: Final answer
    x = 11,222.34

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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.