Home / 21,651.08-29,880.78-12,217.84

Finding the Fourth Proportional to 21,651.08, 29,880.78 and 12,217.84

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Solution

The fourth proportional to 21,651.08, 29,880.78 and 12,217.84 is: 16,861.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,651.08 : 29,880.78 = 12,217.84 : x
  2. Step 2: Convert to fraction form
    21,651.08/29,880.78 = 12,217.84/x
  3. Step 3: Cross multiply
    21,651.08x = 29,880.78 × 12,217.84
  4. Step 4: Simplify right side
    21,651.08x = 365,078,589.12
  5. Step 5: Solve for x
    x = 365,078,589.12/21,651.08
  6. Step 6: Final answer
    x = 16,861.91

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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.