Home / 12,231.18-16,874.28-8,651.40

Finding the Fourth Proportional to 12,231.18, 16,874.28 and 8,651.40

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Solution

The fourth proportional to 12,231.18, 16,874.28 and 8,651.40 is: 11,935.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,231.18 : 16,874.28 = 8,651.40 : x
  2. Step 2: Convert to fraction form
    12,231.18/16,874.28 = 8,651.40/x
  3. Step 3: Cross multiply
    12,231.18x = 16,874.28 × 8,651.40
  4. Step 4: Simplify right side
    12,231.18x = 145,986,145.99
  5. Step 5: Solve for x
    x = 145,986,145.99/12,231.18
  6. Step 6: Final answer
    x = 11,935.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.