Home / 34,311.36-51,471.18-12,120.21

Finding the Fourth Proportional to 34,311.36, 51,471.18 and 12,120.21

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Solution

The fourth proportional to 34,311.36, 51,471.18 and 12,120.21 is: 18,181.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,311.36 : 51,471.18 = 12,120.21 : x
  2. Step 2: Convert to fraction form
    34,311.36/51,471.18 = 12,120.21/x
  3. Step 3: Cross multiply
    34,311.36x = 51,471.18 × 12,120.21
  4. Step 4: Simplify right side
    34,311.36x = 623,841,510.55
  5. Step 5: Solve for x
    x = 623,841,510.55/34,311.36
  6. Step 6: Final answer
    x = 18,181.78

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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.