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Finding the Fourth Proportional to 11,811.61, 16,300.06 and 6,506.41

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Solution

The fourth proportional to 11,811.61, 16,300.06 and 6,506.41 is: 8,978.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,811.61 : 16,300.06 = 6,506.41 : x
  2. Step 2: Convert to fraction form
    11,811.61/16,300.06 = 6,506.41/x
  3. Step 3: Cross multiply
    11,811.61x = 16,300.06 × 6,506.41
  4. Step 4: Simplify right side
    11,811.61x = 106,054,873.38
  5. Step 5: Solve for x
    x = 106,054,873.38/11,811.61
  6. Step 6: Final answer
    x = 8,978.87

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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.