Home / 12,611.24-18,916.80-3,846.20

Finding the Fourth Proportional to 12,611.24, 18,916.80 and 3,846.20

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Solution

The fourth proportional to 12,611.24, 18,916.80 and 3,846.20 is: 5,769.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,611.24 : 18,916.80 = 3,846.20 : x
  2. Step 2: Convert to fraction form
    12,611.24/18,916.80 = 3,846.20/x
  3. Step 3: Cross multiply
    12,611.24x = 18,916.80 × 3,846.20
  4. Step 4: Simplify right side
    12,611.24x = 72,757,796.16
  5. Step 5: Solve for x
    x = 72,757,796.16/12,611.24
  6. Step 6: Final answer
    x = 5,769.28

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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.