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Finding the Fourth Proportional to 11,818.95, 16,310.95 and 6,513.77

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Solution

The fourth proportional to 11,818.95, 16,310.95 and 6,513.77 is: 8,989.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,818.95 : 16,310.95 = 6,513.77 : x
  2. Step 2: Convert to fraction form
    11,818.95/16,310.95 = 6,513.77/x
  3. Step 3: Cross multiply
    11,818.95x = 16,310.95 × 6,513.77
  4. Step 4: Simplify right side
    11,818.95x = 106,245,776.78
  5. Step 5: Solve for x
    x = 106,245,776.78/11,818.95
  6. Step 6: Final answer
    x = 8,989.44

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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.