Home / 12,261.16-18,375.18-8,790.76

Finding the Fourth Proportional to 12,261.16, 18,375.18 and 8,790.76

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Solution

The fourth proportional to 12,261.16, 18,375.18 and 8,790.76 is: 13,174.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,261.16 : 18,375.18 = 8,790.76 : x
  2. Step 2: Convert to fraction form
    12,261.16/18,375.18 = 8,790.76/x
  3. Step 3: Cross multiply
    12,261.16x = 18,375.18 × 8,790.76
  4. Step 4: Simplify right side
    12,261.16x = 161,531,797.34
  5. Step 5: Solve for x
    x = 161,531,797.34/12,261.16
  6. Step 6: Final answer
    x = 13,174.27

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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.