Home / 18,811,424.64-28,215,766.80-8,439,855.30

Finding the Fourth Proportional to 18,811,424.64, 28,215,766.80 and 8,439,855.30

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Solution

The fourth proportional to 18,811,424.64, 28,215,766.80 and 8,439,855.30 is: 12,659,168.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,811,424.64 : 28,215,766.80 = 8,439,855.30 : x
  2. Step 2: Convert to fraction form
    18,811,424.64/28,215,766.80 = 8,439,855.30/x
  3. Step 3: Cross multiply
    18,811,424.64x = 28,215,766.80 × 8,439,855.30
  4. Step 4: Simplify right side
    18,811,424.64x = 238,136,989,062,183.09
  5. Step 5: Solve for x
    x = 238,136,989,062,183.09/18,811,424.64
  6. Step 6: Final answer
    x = 12,659,168.23

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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.