Home / 12,607.32-18,942.30-8,167.80

Finding the Fourth Proportional to 12,607.32, 18,942.30 and 8,167.80

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Solution

The fourth proportional to 12,607.32, 18,942.30 and 8,167.80 is: 12,271.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,607.32 : 18,942.30 = 8,167.80 : x
  2. Step 2: Convert to fraction form
    12,607.32/18,942.30 = 8,167.80/x
  3. Step 3: Cross multiply
    12,607.32x = 18,942.30 × 8,167.80
  4. Step 4: Simplify right side
    12,607.32x = 154,716,917.94
  5. Step 5: Solve for x
    x = 154,716,917.94/12,607.32
  6. Step 6: Final answer
    x = 12,271.99

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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.